Diseases & Conditions

• A-fib (see: Atrial fibrillation and atrial flutter)
  (Condition)
• A/B/D (see: Apnea of prematurity)
  (Condition)
• AA amyloidosis (see: Secondary systemic amyloidosis)
  (Condition)
• AAA (see: Abdominal aortic aneurysm)
  (Condition)
• Aarskog disease (see: Aarskog syndrome)
  (Condition)
• Aarskog syndrome
  (Condition)
• Aarskog-Scott syndrome (see: Aarskog syndrome)
  (Condition)
• AAS (see: Aarskog syndrome)
  (Condition)
• Aase syndrome
  (Condition)
• Aase-Smith I syndrome (see: Aase syndrome)
  (Condition)
• Aase-Smith syndrome (see: Aase syndrome)
  (Condition)
• AAT deficiency (see: Alpha-1 antitrypsin deficiency)
  (Condition)
• Abacterial cystitis (see: Cystitis - noninfectious)
  (Condition)
• Abdominal aortic aneurysm
  (Condition)
• Abdominal pain - IBS (see: Irritable bowel syndrome)
  (Condition)
• Abdominal pain - volvulus (see: Volvulus - childhood)
  (Condition)
• Abdominal pain in children - intussusception (see: Intussusception – children)
  (Condition)
• Abdominal wall defect - infant (see: Gastroschisis)
  (Condition)
• Abdominal wall defect - infant (see: Omphalocele)
  (Condition)
• Abdominal wall defect - neonate (see: Gastroschisis)
  (Condition)
• Abdominal wall defect - neonate (see: Omphalocele)
  (Condition)
• Abdominal wall defect - newborn (see: Gastroschisis)
  (Condition)
• Abdominal wall defect - newborn (see: Omphalocele)
  (Condition)
• Abducens palsy (see: Cranial mononeuropathy VI)
  (Condition)
• Abducens paralysis (see: Cranial mononeuropathy VI)
  (Condition)
• Abetalipoproteinemia (see: Bassen-Kornzweig syndrome)
  (Condition)
• Ablatio placentae (see: Placenta abruption - definition)
  (Condition)
• Abnormal heart rhythm - PSVT (see: Paroxysmal supraventricular tachycardia (PSVT))
  (Condition)
• Abnormal heart rhythm - VF (see: Ventricular fibrillation)
  (Condition)
• Abnormal heart rhythm - WPW (see: Wolff-Parkinson-White syndrome (WPW))
  (Condition)
• Abnormal heart rhythms (see: Arrhythmias)
  (Condition)
• Abnormal heartbeat (see: Ectopic heartbeat)
  (Condition)
• Abnormal menstrual periods (see: Vaginal or uterine bleeding)
  (Condition)
• Abnormal uterine bleeding
  (Condition)
• Abnormal uterine bleeding - hormonal (see: Abnormal uterine bleeding)
  (Condition)
• Abnormal uterine bleeding-hormonal (see: Abnormal uterine bleeding)
  (Condition)
• Abnormal vaginal bleeding (see: Abnormal uterine bleeding)
  (Condition)
• Abnormal vaginal bleeding (see: Vaginal or uterine bleeding)
  (Condition)
• Abnormality of the urea cycle - hereditary (see: Hereditary urea cycle abnormality)
  (Condition)
• ABO incompatibility
  (Condition)
• ABO incompatibility - HDN (see: Hemolytic disease of the newborn)
  (Condition)
• Abortion - complete (see: Miscarriage)
  (Condition)
• Abortion - incomplete (see: Miscarriage)
  (Condition)
• Abortion - inevitable (see: Miscarriage)
  (Condition)
• Abortion - infected (see: Miscarriage)
  (Condition)
• Abortion - missed (see: Miscarriage)
  (Condition)
• Abortion - spontaneous (see: Miscarriage)
  (Condition)
• Abortion - threatened (see: Miscarriage - threatened)
  (Condition)
• Abrasion - corneal (see: Corneal injury)
  (Condition)
• Abruptio placentae (see: Placenta abruption - definition)
  (Condition)
• ABS (see: Amniotic band sequence)
  (Condition)
• Abscess
  (Condition)
• Abscess - abdomen or pelvis
  (Condition)
• Abscess - amebic liver (see: Amebic liver abscess)
  (Condition)
• Abscess - anorectal (see: Anorectal abscess)
  (Condition)
• Abscess - areolar gland (see: Subareolar abscess)
  (Condition)
• Abscess - Bartholin (see: Bartholin cyst or abscess)
  (Condition)
• Abscess - Bartholin's (see: Bartholin cyst or abscess)
  (Condition)
• Abscess - brain (see: Brain abscess)
  (Condition)
• Abscess - epidural (see: Epidural abscess)
  (Condition)
• Abscess - intra-abdominal (see: Abscess - abdomen or pelvis)
  (Condition)
• Abscess - peritonsillar (see: Peritonsillar abscess)
  (Condition)
• Abscess - skin (see: Skin abscess)
  (Condition)
• Abscess - spinal cord (see: Spinal cord abscess)
  (Condition)
• Abscess - tooth (see: Tooth abscess)
  (Condition)
• Absence of periods - primary (see: Absent menstrual periods - primary)
  (Condition)
• Absence of periods - secondary (see: Absent menstrual periods - secondary)
  (Condition)
• Absence seizure
  (Condition)
• Absent menses - primary (see: Absent menstrual periods - primary)
  (Condition)
• Absent menses - secondary (see: Absent menstrual periods - secondary)
  (Condition)
• Absent menstrual periods - primary
  (Condition)
• Absent menstrual periods - secondary
  (Condition)
• Absent periods - primary (see: Absent menstrual periods - primary)
  (Condition)
• Absent periods - secondary (see: Absent menstrual periods - secondary)
  (Condition)
• Absent pulmonary valve
  (Condition)
• Absent pulmonary valve syndrome (see: Absent pulmonary valve)
  (Condition)
• Acanthamoeba keratitis (see: Corneal ulcers and infections)
  (Condition)
• Acanthocytosis (see: Bassen-Kornzweig syndrome)
  (Condition)
• Acanthosis nigricans
  (Condition)
• ACC - adrenal (see: Adrenocortical carcinoma)
  (Condition)
• Accelerated hypertension (see: Malignant hypertension)
  (Condition)
• Accelerated hyperthyroidism (see: Thyroid storm)
  (Condition)
• Accelerated silicosis (see: Silicosis )
  (Condition)
• Accelerating angina (see: Unstable angina)
  (Condition)
• Accelerating angina - ACS (see: Acute coronary syndrome)
  (Condition)
• Accelerating angina-ACS (see: Acute coronary syndrome)
  (Condition)
• ACD (see: Anemia of chronic disease)
  (Condition)
• Achalasia
  (Condition)
• Achilles tendinitis
  (Condition)
• Achondrogenesis
  (Condition)
• Achondroplasia
  (Condition)
• Achondroplastic dwarfism (see: Achondroplasia)
  (Condition)
• Acidosis
  (Condition)
• Acidosis - metabolic (see: Metabolic acidosis)
  (Condition)
• Acidosis - respiratory (see: Respiratory acidosis)
  (Condition)
• Acne
  (Condition)
• Acne rosacea (see: Rosacea)
  (Condition)
• Acne vulgaris (see: Acne)
  (Condition)
• Acoustic neuroma
  (Condition)
• Acoustic trauma
  (Condition)
• Acquired apraxia (see: Apraxia)
  (Condition)
• Acquired bronchiectasis (see: Bronchiectasis)
  (Condition)
• Acquired disorders of platelet function (see: Acquired platelet function defect)
  (Condition)
• Acquired growth hormone deficiency (see: Growth hormone deficiency - children)
  (Condition)
• Acquired immune deficiency syndrome (see: HIV/AIDS)
  (Condition)
• Acquired immune deficiency syndrome - children (see: HIV/AIDS in pregnant women and infants)
  (Condition)
• Acquired immune deficiency syndrome: HIV-1 (see: HIV/AIDS)
  (Condition)
• Acquired nephrogenic diabetes insipidus (see: Nephrogenic diabetes insipidus)
  (Condition)
• Acquired platelet function defect
  (Condition)
• Acquired qualitative platelet disorders (see: Acquired platelet function defect)
  (Condition)
• Acral lentiginous melanoma (see: Melanoma)
  (Condition)
• Acral vesicular dermatitis (see: Pompholyx eczema)
  (Condition)
• Acrocephalosyndactyly (see: Apert syndrome)
  (Condition)
• Acrochordon (see: Cutaneous skin tag)
  (Condition)
• Acrodermatitis - infantile lichenoid (see: Gianotti-Crosti syndrome)
  (Condition)
• Acrodermatitis - papular infantile (see: Gianotti-Crosti syndrome)
  (Condition)
• Acrodermatitis enteropathica (see: Gianotti-Crosti syndrome)
  (Condition)
• Acrodysostosis
  (Condition)
• Acrodysplasia (see: Acrodysostosis)
  (Condition)
• Acromegaly
  (Condition)
• ACTH-secreting adenoma (see: Cushing disease)
  (Condition)
• Actinic keratosis
  (Condition)
• Actinomycosis
  (Condition)
• Actinomycosis - pulmonary (see: Pulmonary actinomycosis)
  (Condition)
• Actinomycosis - thoracic (see: Pulmonary actinomycosis)
  (Condition)
• Acute abdomen (see: Peritonitis)
  (Condition)
• Acute adrenal crisis
  (Condition)
• Acute adrenal insufficiency (see: Acute adrenal crisis)
  (Condition)
• Acute arterial occlusion - kidney
  (Condition)
• Acute back pain (see: Low back pain - acute)
  (Condition)
• Acute bacterial cystitis (see: Cystitis - acute)
  (Condition)
• Acute bacterial tracheitis (see: Tracheitis)
  (Condition)
• Acute bladder infection (see: Cystitis - acute)
  (Condition)
• Acute brain syndrome (see: Delirium)
  (Condition)
• Acute bronchitis
  (Condition)
• Acute bullous disorder - erythema multiforme (see: Erythema multiforme)
  (Condition)
• Acute cerebellar ataxia
  (Condition)
• Acute childhood leukemia (see: Acute lymphoblastic leukemia (ALL))
  (Condition)
• Acute cholecystitis
  (Condition)
• Acute colonic ileus (see: Intestinal pseudo-obstruction)
  (Condition)
• Acute confusional state (see: Delirium)
  (Condition)
• Acute coronary syndrome
  (Condition)
• Acute CPPD arthritis (see: Calcium pyrophosphate arthritis)
  (Condition)
• Acute CPPD crystal-associated arthritis (see: Calcium pyrophosphate arthritis)
  (Condition)
• Acute flaccid myelitis
  (Condition)
• Acute flaccid paralysis (see: Acute flaccid myelitis)
  (Condition)
• Acute flaccid paralysis with anterior myelitis (see: Acute flaccid myelitis)
  (Condition)
• Acute gastroenteritis (see: Bacterial gastroenteritis)
  (Condition)
• Acute glaucoma (see: Glaucoma)
  (Condition)
• Acute glomerulonephritis (see: Acute nephritic syndrome)
  (Condition)
• Acute gout (see: Gout)
  (Condition)
• Acute gouty arthritis (see: Gout)
  (Condition)
• Acute granulocytic leukemia (see: Acute myeloid leukemia - adult)
  (Condition)
• Acute granulocytic leukemia - children (see: Acute myeloid leukemia (AML) - children)
  (Condition)
• Acute hemolytic transfusion reaction (see: ABO incompatibility)
  (Condition)
• Acute hydronephrosis (see: Hydronephrosis of one kidney)
  (Condition)
• Acute idiopathic polyneuritis (see: Guillain-Barre syndrome)
  (Condition)
• Acute increased intracranial pressure (see: Increased intracranial pressure)
  (Condition)
• Acute inflammatory demyelinating polyneuropathy (see: Guillain-Barre syndrome)
  (Condition)
• Acute inflammatory demyelinating polyradiculoneuropathy (see: Guillain-Barre syndrome)
  (Condition)
• Acute inflammatory polyneuropathy (see: Guillain-Barre syndrome)
  (Condition)
• Acute intermittent porphyria (see: Porphyria)
  (Condition)
• Acute interstitial (allergic) nephritis (see: Interstitial nephritis)
  (Condition)
• Acute kidney failure
  (Condition)
• Acute lung injury (see: Acute respiratory distress syndrome)
  (Condition)
• Acute lymphoblastic leukemia (see: Acute lymphoblastic leukemia (ALL))
  (Condition)
• Acute lymphoblastic leukemia (ALL)
  (Condition)
• Acute lymphocytic leukemia (see: Acute lymphoblastic leukemia (ALL))
  (Condition)
• Acute lymphoid leukemia (see: Acute lymphoblastic leukemia (ALL))
  (Condition)
• Acute MI (see: Heart attack)
  (Condition)
• Acute MI - ACS (see: Acute coronary syndrome)
  (Condition)
• Acute MI-ACS (see: Acute coronary syndrome)
  (Condition)
• Acute mountain sickness
  (Condition)
• Acute myeloblastic leukemia - children (see: Acute myeloid leukemia (AML) - children)
  (Condition)
• Acute myelogenous leukemia (see: Acute myeloid leukemia - adult)
  (Condition)
• Acute myelogenous leukemia (AML) - children
  (Condition)
• Acute myelogenous leukemia - children (see: Acute myeloid leukemia (AML) - children)
  (Condition)
• Acute myeloid leukemia (AML) - children
  (Condition)
• Acute myeloid leukemia - adult
  (Condition)
• Acute necrotizing ulcerative gingivitis (see: Trench mouth)
  (Condition)
• Acute necrotizing ulcerative gingivitis (ANUG) (see: Trench mouth)
  (Condition)
• Acute nephritic syndrome
  (Condition)
• Acute non-lymphocytic leukemia (ANLL) - children (see: Acute myeloid leukemia (AML) - children)
  (Condition)
• Acute nonlymphocytic leukemia (ANLL) (see: Acute myeloid leukemia - adult)
  (Condition)
• Acute pancreatitis
  (Condition)
• Acute pancreatitis - chronic (see: Chronic pancreatitis)
  (Condition)
• Acute prostatitis (see: Prostatitis - bacterial)
  (Condition)
• Acute renal arterial thrombosis (see: Acute arterial occlusion - kidney)
  (Condition)
• Acute renal artery occlusion (see: Acute arterial occlusion - kidney)
  (Condition)
• Acute renal failure - prerenal azotemia (see: Prerenal azotemia)
  (Condition)
• Acute respiratory distress syndrome
  (Condition)
• Acute rheumatic fever (see: Rheumatic fever)
  (Condition)
• Acute silicosis (see: Silicosis )
  (Condition)
• Acute sinusitis (see: Sinusitis)
  (Condition)
• Acute transverse myelitis (see: Transverse myelitis)
  (Condition)
• Acute tubular necrosis
  (Condition)
• Acute/chronic CPPD arthritis (see: Calcium pyrophosphate arthritis)
  (Condition)
• ADD (see: Attention deficit hyperactivity disorder)
  (Condition)
• Addiction - drug (see: Substance use disorder)
  (Condition)
• Addictive gambling (see: Compulsive gambling)
  (Condition)
• Addison anemia (see: Pernicious anemia)
  (Condition)
• Addison disease
  (Condition)
• Addison's disease (see: Addison disease)
  (Condition)
• Addisonian crisis (see: Acute adrenal crisis)
  (Condition)
• Adenocarcinoma - colon (see: Colorectal cancer)
  (Condition)
• Adenocarcinoma - endometrium (see: Endometrial cancer)
  (Condition)
• Adenocarcinoma - lung (see: Non-small cell lung cancer)
  (Condition)
• Adenocarcinoma - uterus (see: Endometrial cancer)
  (Condition)
• Adenocarcinoma of renal cells (see: Renal cell carcinoma)
  (Condition)
• Adenocarcinoma of the stomach (see: Stomach cancer)
  (Condition)
• Adenoids - enlarged (see: Enlarged adenoids)
  (Condition)
• Adenoma - secreting (see: Prolactinoma)
  (Condition)
• Adenoma sebaceum (see: Tuberous sclerosis)
  (Condition)
• Adenomatous polyps (see: Colorectal polyps)
  (Condition)
• Adenomyoma (see: Adenomyosis)
  (Condition)
• Adenomyosis
  (Condition)
• Adenosarcoma - uterine (see: Uterine sarcoma)
  (Condition)
• ADHD (see: Attention deficit hyperactivity disorder)
  (Condition)
• Adhesion
  (Condition)
• Adhesive capsulitis (see: Frozen shoulder)
  (Condition)
• Adjustment disorder
  (Condition)
• ADPKD (see: Polycystic kidney disease)
  (Condition)
• Adrenal crisis (see: Acute adrenal crisis)
  (Condition)
• Adrenal tumor - Cushing syndrome (see: Cushing syndrome due to adrenal tumor)
  (Condition)
• Adrenocortical carcinoma
  (Condition)
• Adrenocortical hypofunction (see: Addison disease)
  (Condition)
• Adrenogenital syndrome (see: Congenital adrenal hyperplasia)
  (Condition)
• Adrenoleukodystrophy
  (Condition)
• Adrenomyeloneuropathy (see: Adrenoleukodystrophy)
  (Condition)
• ADTKD (see: Autosomal dominant tubulointerstitial kidney disease)
  (Condition)
• Adult hypothyroidism (see: Hypothyroidism)
  (Condition)
• Adult soft tissue sarcoma
  (Condition)
• Adult Still disease
  (Condition)
• Adult-onset diabetes (see: Type 2 diabetes)
  (Condition)
• Adult-onset Still's disease (see: Adult Still disease)
  (Condition)
• AED - childhood epilepsy (see: Epilepsy in children)
  (Condition)
• AF (see: Atrial fibrillation and atrial flutter)
  (Condition)
• AFib (see: Atrial fibrillation and atrial flutter)
  (Condition)
• Afibrinogenemia (see: Congenital fibrinogen deficiency)
  (Condition)
• AFL (see: Atrial fibrillation and atrial flutter)
  (Condition)
• AFM (see: Acute flaccid myelitis)
  (Condition)
• Agammaglobulinemia
  (Condition)
• Agammaglobulinemia - IgA deficiency (see: Selective deficiency of IgA)
  (Condition)
• Agammaglobulinemia - immunodeficiency (see: Immunodeficiency disorders)
  (Condition)
• Age spots (see: Liver spots)
  (Condition)
• Age-related cataract (see: Cataract - adult)
  (Condition)
• Age-related hearing loss
  (Condition)
• Age-related macular degeneration
  (Condition)
• Age-related macular degeneration (ARMD) (see: Age-related macular degeneration)
  (Condition)
• Agenesis of corpus callosum with chorioretinal abnormality (see: Aicardi syndrome)
  (Condition)
• Agenesis of corpus callosum with infantile spasms and ocular abnormalities (see: Aicardi syndrome)
  (Condition)
• Agnogenic myeloid metaplasia (see: Myelofibrosis)
  (Condition)
• Agoraphobia
  (Condition)
• Agranulocytosis
  (Condition)
• AGUS - dysplasia (see: Cervical dysplasia)
  (Condition)
• AHTR (see: ABO incompatibility)
  (Condition)
• AI (see: Amelogenesis imperfecta)
  (Condition)
• AI - aortic insufficiency (see: Aortic regurgitation)
  (Condition)
• Aicardi syndrome
  (Condition)
• AIDS - Kaposi (see: Kaposi sarcoma)
  (Condition)
• Air around the lung (see: Collapsed lung (pneumothorax))
  (Condition)
• Air leak syndrome (see: Pneumothorax - infants)
  (Condition)
• Air outside the lung (see: Collapsed lung (pneumothorax))
  (Condition)
• Airway obstruction - acute upper (see: Blockage of upper airway)
  (Condition)
• AIS - complete (see: Androgen insensitivity syndrome)
  (Condition)
• AIS - mild (see: Androgen insensitivity syndrome)
  (Condition)
• AIS - partial (see: Androgen insensitivity syndrome)
  (Condition)
• Akathisia (see: Restless legs syndrome)
  (Condition)
• AKU (see: Alkaptonuria)
  (Condition)
• Albinism
  (Condition)
• Albright hereditary osteodystrophy (see: Pseudohypoparathyroidism)
  (Condition)
• Albright's hereditary osteodystrophy (see: Pseudohypoparathyroidism)
  (Condition)
• ALCAPA (see: Anomalous left coronary artery from the pulmonary artery)
  (Condition)
• ALCAPA syndrome (see: Anomalous left coronary artery from the pulmonary artery)
  (Condition)
• Alcaptonuria (see: Alkaptonuria)
  (Condition)
• Alcaptonuric ochronosis (see: Alkaptonuria)
  (Condition)
• Alcohol abuse (see: Alcohol use disorder)
  (Condition)
• Alcohol abuse - delirium tremens (see: Delirium tremens)
  (Condition)
• Alcohol abuse - fetal alcohol (see: Fetal alcohol syndrome)
  (Condition)
• Alcohol addiction (see: Alcohol use disorder)
  (Condition)
• Alcohol dependence (see: Alcohol use disorder)
  (Condition)
• Alcohol in pregnancy (see: Fetal alcohol syndrome)
  (Condition)
• Alcohol use - alcoholic ketoacidosis (see: Alcoholic ketoacidosis)
  (Condition)
• Alcohol use - ascites (see: Ascites)
  (Condition)
• Alcohol use - Wernicke (see: Wernicke-Korsakoff syndrome)
  (Condition)
• Alcohol use disorder
  (Condition)
• Alcohol withdrawal
  (Condition)
• Alcohol withdrawal - delirium tremens (see: Delirium tremens)
  (Condition)
• Alcohol withdrawal delirium (see: Delirium tremens)
  (Condition)
• Alcohol-related birth defects (see: Fetal alcohol syndrome)
  (Condition)
• Alcoholic cardiomyopathy (see: Dilated cardiomyopathy)
  (Condition)
• Alcoholic encephalopathy (see: Wernicke-Korsakoff syndrome)
  (Condition)
• Alcoholic hepatitis - varices (see: Bleeding esophageal varices)
  (Condition)
• Alcoholic ketoacidosis
  (Condition)
• Alcoholic liver disease
  (Condition)
• Alcoholic liver disease - varices (see: Bleeding esophageal varices)
  (Condition)
• Alcoholic neuropathy
  (Condition)
• Alcoholic polyneuropathy (see: Alcoholic neuropathy)
  (Condition)
• Alcoholism - alcohol use (see: Alcohol use disorder)
  (Condition)
• Alcoholism - fetal alcohol (see: Fetal alcohol syndrome)
  (Condition)
• Alcoholism - Wernicke (see: Wernicke-Korsakoff syndrome)
  (Condition)
• ALD (see: Adrenoleukodystrophy)
  (Condition)
• Alexander disease (see: Factor VII deficiency)
  (Condition)
• Alkalosis
  (Condition)
• Alkalosis - respiratory (see: Respiratory alkalosis)
  (Condition)
• Alkaptonuria
  (Condition)
• Alkaptonuric ochronosis (see: Alkaptonuria)
  (Condition)
• ALL (see: Acute lymphoblastic leukemia (ALL))
  (Condition)
• Allergic conjunctivitis (see: Conjunctivitis or pink eye)
  (Condition)
• Allergic conjunctivitis
  (Condition)
• Allergic dermatitis (see: Contact dermatitis)
  (Condition)
• Allergic reaction - anaphylaxis (see: Anaphylaxis)
  (Condition)
• Allergic reaction - angioedema (see: Angioedema)
  (Condition)
• Allergic reaction - drug (medication) (see: Drug allergies)
  (Condition)
• Allergic reaction - serum sickness (see: Serum sickness)
  (Condition)
• Allergic rhinitis
  (Condition)
• Allergic vasculitis (see: Hypersensitivity vasculitis)
  (Condition)
• Allergies
  (Condition)
• Allergies - allergic rhinitis (see: Allergic rhinitis)
  (Condition)
• Allergy - allergens (see: Allergies)
  (Condition)
• Allergy - allergic rhinitis (see: Allergic rhinitis)
  (Condition)
• Allergy - allergies (see: Allergies)
  (Condition)
• Allergy - serum sickness (see: Serum sickness)
  (Condition)
• Allergy to food (see: Food allergy)
  (Condition)
• Allogeneic transplant - GVHD (see: Graft-versus-host disease)
  (Condition)
• Alopecia areata
  (Condition)
• Alopecia in men (see: Male pattern baldness)
  (Condition)
• Alopecia in women (see: Female pattern baldness)
  (Condition)
• Alopecia totalis (see: Alopecia areata)
  (Condition)
• Alopecia universalis (see: Alopecia areata)
  (Condition)
• Alpha thalassemia (see: Thalassemia)
  (Condition)
• Alpha-1 antitrypsin deficiency
  (Condition)
• Alpha-1 protease deficiency (see: Alpha-1 antitrypsin deficiency)
  (Condition)
• Alpha-L-iduronate deficiency (see: Mucopolysaccharidosis type I)
  (Condition)
• Alport syndrome
  (Condition)
• ALS (see: Amyotrophic lateral sclerosis (ALS))
  (Condition)
• Alstrom syndrome
  (Condition)
• Alström syndrome (see: Alstrom syndrome)
  (Condition)
• ALTE (see: Brief resolved unexplained event - BRUE)
  (Condition)
• Altitude anoxia (see: Acute mountain sickness)
  (Condition)
• Altitude sickness (see: Acute mountain sickness)
  (Condition)
• Alveolar abnormalities
  (Condition)
• Alveolar cyst disease (see: Echinococcosis)
  (Condition)
• Alveolar lipoproteinosis phospholipidosis (see: Pulmonary alveolar proteinosis)
  (Condition)
• Alveolar proteinosis (see: Pulmonary alveolar proteinosis)
  (Condition)
• Alveolar rhabdomyosarcoma (see: Rhabdomyosarcoma)
  (Condition)
• Alveolitis (see: Interstitial lung disease)
  (Condition)
• Alzheimer disease
  (Condition)
• Alzheimer disease - dementia (see: Dementia)
  (Condition)
• Alzheimer's disease (see: Alzheimer disease)
  (Condition)
• Amaurosis fugax
  (Condition)
• Amblyopia
  (Condition)
• AMD (see: Age-related macular degeneration)
  (Condition)
• Amebiasis
  (Condition)
• Amebic colitis (see: Amebiasis)
  (Condition)
• Amebic dysentery (see: Amebiasis)
  (Condition)
• Amebic liver abscess
  (Condition)
• Amelogenesis imperfecta
  (Condition)
• Amenorrhea - secondary (see: Absent menstrual periods - secondary)
  (Condition)
• American mountain fever (see: Colorado tick fever)
  (Condition)
• American trypanosomiasis (see: Chagas disease)
  (Condition)
• AML (see: Acute myeloid leukemia - adult)
  (Condition)
• AML - children (see: Acute myeloid leukemia (AML) - children)
  (Condition)
• Amniotic band sequence
  (Condition)
• Amniotic band syndrome (see: Amniotic band sequence)
  (Condition)
• Amniotic constriction bands (see: Amniotic band sequence)
  (Condition)
• Amyloid - primary (see: Primary amyloidosis)
  (Condition)
• Amyloidosis - cardiac (see: Cardiac amyloidosis)
  (Condition)
• Amyloidosis - cerebral (see: Cerebral amyloid angiopathy)
  (Condition)
• Amyloidosis - hereditary (see: Hereditary amyloidosis)
  (Condition)
• Amyloidosis - primary (see: Primary amyloidosis)
  (Condition)
• Amyloidosis - secondary systemic (see: Secondary systemic amyloidosis)
  (Condition)
• Amyotrophic lateral sclerosis (ALS)
  (Condition)
• Amyotrophic lateral sclerosis - supranuclear ophthalmoplegia (see: Supranuclear ophthalmoplegia)
  (Condition)
• AN (see: Acanthosis nigricans)
  (Condition)
• Anaerobic pneumonia (see: Aspiration pneumonia)
  (Condition)
• Anal abscess (see: Anorectal abscess)
  (Condition)
• Anal atresia (see: Imperforate anus)
  (Condition)
• Anal cancer
  (Condition)
• Anal fissure
  (Condition)
• anal gland abscess (see: Anorectal abscess)
  (Condition)
• Anal ulcer (see: Anal fissure)
  (Condition)
• Analgesic nephropathy
  (Condition)
• Anaphylactic reaction (see: Anaphylaxis)
  (Condition)
• Anaphylactic shock (see: Anaphylaxis)
  (Condition)
• Anaphylactoid purpura (see: IgA vasculitis - Henoch-Schonlein purpura)
  (Condition)
• Anaphylaxis
  (Condition)
• Anaplastic carcinoma of the thyroid (see: Anaplastic thyroid cancer)
  (Condition)
• Anaplastic large cell lymphoma (see: Non-Hodgkin lymphoma in children)
  (Condition)
• Anaplastic thyroid cancer
  (Condition)
• Anaplastic thyroid carcinoma (see: Thyroid cancer)
  (Condition)
• Ancylostoma braziliensis (see: Creeping eruption)
  (Condition)
• Ancylostoma caninum (see: Creeping eruption)
  (Condition)
• Ancylostoma duodenale infection (see: Hookworm infection)
  (Condition)
• Androblastoma (see: Sertoli-Leydig cell tumor)
  (Condition)
• Androgen insensitivity syndrome
  (Condition)
• Androgen insensitivity syndrome - differences of sex development (see: Androgen insensitivity syndrome)
  (Condition)
• Androgen insensitivity syndrome - Intersex (see: Androgen insensitivity syndrome)
  (Condition)
• Androgen insensitivity syndrome - partial (see: Partial androgen insensitivity syndrome)
  (Condition)
• Androgenetic alopecia (see: Male pattern baldness)
  (Condition)
• Androgenetic alopecia in women (see: Female pattern baldness)
  (Condition)
• Anejaculation (see: Delayed ejaculation)
  (Condition)
• Anemia
  (Condition)
• Anemia - atrophic gastritis (see: Pernicious anemia)
  (Condition)
• Anemia - Fanconi's (see: Fanconi anemia)
  (Condition)
• Anemia - HDN (see: Hemolytic disease of the newborn)
  (Condition)
• Anemia - hemolytic (see: Hemolytic anemia)
  (Condition)
• Anemia - hemolytic - caused by chemicals or toxins (see: Hemolytic anemia caused by chemicals and toxins)
  (Condition)
• Anemia - hemolytic due to G6PD deficiency (see: Glucose-6-phosphate dehydrogenase deficiency)
  (Condition)
• Anemia - IF (see: Pernicious anemia)
  (Condition)
• Anemia - immune hemolytic (see: Immune hemolytic anemia)
  (Condition)
• Anemia - immune hemolytic - secondary to drugs (see: Drug-induced immune hemolytic anemia)
  (Condition)
• Anemia - intrinsic factor (see: Pernicious anemia)
  (Condition)
• Anemia - iron deficiency (see: Iron deficiency anemia)
  (Condition)
• Anemia - iron deficiency - children (see: Anemia caused by low iron - children)
  (Condition)
• Anemia - iron deficiency - infants and toddlers (see: Anemia caused by low iron - infants and toddlers)
  (Condition)
• Anemia - iron deficiency - children (see: Anemia caused by low iron - children)
  (Condition)
• Anemia - iron deficiency - infants and toddlers (see: Anemia caused by low iron - infants and toddlers)
  (Condition)
• Anemia - sickle cell (see: Sickle cell disease)
  (Condition)
• Anemia caused by low iron - children
  (Condition)
• Anemia caused by low iron - infants and toddlers
  (Condition)
• Anemia of chronic disease
  (Condition)
• Anemia of chronic inflammation (see: Anemia of chronic disease)
  (Condition)
• Anemia of inflammation (see: Anemia of chronic disease)
  (Condition)
• Anencephaly
  (Condition)
• Aneurysm
  (Condition)
• Aneurysm - aortic (see: Abdominal aortic aneurysm)
  (Condition)
• Aneurysm - cerebral (see: Aneurysm in the brain)
  (Condition)
• Aneurysm - intracranial (see: Aneurysm in the brain)
  (Condition)
• Aneurysm - mesenteric artery (see: Aneurysm)
  (Condition)
• Aneurysm - popliteal artery (see: Aneurysm)
  (Condition)
• Aneurysm - splenic artery (see: Aneurysm)
  (Condition)
• Aneurysm - thoracic aortic (see: Thoracic aortic aneurysm)
  (Condition)
• Aneurysm in the brain
  (Condition)
• Angelman syndrome
  (Condition)
• Angiitis (see: Necrotizing vasculitis)
  (Condition)
• Angina
  (Condition)
• Angina - chronic (see: Stable angina)
  (Condition)
• Angina - stable (see: Stable angina)
  (Condition)
• Angina - unstable (see: Unstable angina)
  (Condition)
• Angina - unstable-ACS (see: Acute coronary syndrome)
  (Condition)
• Angina - variant (see: Coronary artery spasm)
  (Condition)
• Angina pectoris (see: Stable angina)
  (Condition)
• Angio-osteohypertrophy (see: Klippel-Trenaunay syndrome)
  (Condition)
• Angiodysplasia of the colon
  (Condition)
• Angioedema (see: Hives)
  (Condition)
• Angioedema
  (Condition)
• Angiofibroma - juvenile (see: Juvenile angiofibroma)
  (Condition)
• Angioma - cherry (see: Cherry angioma)
  (Condition)
• Angioma cavernosum (see: Red birthmarks)
  (Condition)
• Angioneurotic edema (see: Angioedema)
  (Condition)
• Angiosarcoma (see: Adult soft tissue sarcoma)
  (Condition)
• Angle tumor (see: Acoustic neuroma)
  (Condition)
• Angle-closure glaucoma (see: Glaucoma)
  (Condition)
• Anhidrotic ectodermal dysplasia (see: Ectodermal dysplasias)
  (Condition)
• Animal bite - rabies (see: Rabies)
  (Condition)
• Ankle arthroscopy
  (Condition)
• Ankle surgery (see: Ankle arthroscopy)
  (Condition)
• Ankyloglossia (see: Tongue tie)
  (Condition)
• Ankylosing spondylitis
  (Condition)
• Annular pancreas
  (Condition)
• Anomalous left coronary artery from the pulmonary artery
  (Condition)
• Anomalous origin of the left coronary artery arising from the pulmonary artery (see: Anomalous left coronary artery from the pulmonary artery)
  (Condition)
• Anondontia (see: Ectodermal dysplasias)
  (Condition)
• Anorchia
  (Condition)
• Anorectal abscess
  (Condition)
• Anorectal fissure (see: Anal fissure)
  (Condition)
• Anorectal malformation (see: Imperforate anus)
  (Condition)
• Anorexia
  (Condition)
• Anovulatory bleeding (see: Abnormal uterine bleeding)
  (Condition)
• Anoxic encephalopathy (see: Cerebral hypoxia)
  (Condition)
• Anterior knee pain
  (Condition)
• Anterior myelitis (see: Acute flaccid myelitis)
  (Condition)
• Anterior uveitis (see: Uveitis)
  (Condition)
• Anthracosilicosis (see: Coal worker's pneumoconiosis)
  (Condition)
• Anthrax
  (Condition)
• Anthrosilicosis (see: Coal worker's pneumoconiosis)
  (Condition)
• Anti-glomerular basement membrane antibody disease (see: Anti-glomerular basement membrane disease)
  (Condition)
• Anti-glomerular basement membrane disease
  (Condition)
• Antibiotic-associated colitis (see: Pseudomembranous colitis)
  (Condition)
• Anticardiolipin antibodies (see: Antiphospholipid syndrome - APS)
  (Condition)
• Anticonvulsant - childhood epilepsy (see: Epilepsy in children)
  (Condition)
• Antiepileptic drug - childhood epilepsy (see: Epilepsy in children)
  (Condition)
• Antiglomerular basement membrane antibody disease (see: Anti-glomerular basement membrane disease)
  (Condition)
• Antiphospholipid syndrome - APS
  (Condition)
• Antipsychotic drugs - tardive dyskinesia (see: Tardive dyskinesia)
  (Condition)
• Antipsychotics - extrapyramidal (see: Basal ganglia dysfunction)
  (Condition)
• Antisocial personality disorder
  (Condition)
• Antithrombin III deficiency - congenital (see: Congenital antithrombin III deficiency)
  (Condition)
• Antivirals - hepatitis B children (see: Hepatitis B - children)
  (Condition)
• Antivirals - hepatitis C children (see: Hepatitis C - children)
  (Condition)
• Anxiety attacks (see: Panic disorder)
  (Condition)
• Anxiety disorder (see: Generalized anxiety disorder)
  (Condition)
• Anxiety disorder - agoraphobia (see: Agoraphobia)
  (Condition)
• Anxiety disorder - children (see: Generalized anxiety disorder in children)
  (Condition)
• Anxiety disorder - panic attacks (see: Panic disorder)
  (Condition)
• Anxiety disorder - phobia (see: Phobia - simple/specific)
  (Condition)
• Anxiety disorder - social (see: Social anxiety disorder)
  (Condition)
• Anxiety disorder- agoraphobia (see: Agoraphobia)
  (Condition)
• AOCD (see: Anemia of chronic disease)
  (Condition)
• AOP (see: Apnea of prematurity)
  (Condition)
• Aortic aneurysm - dissecting (see: Aortic dissection)
  (Condition)
• Aortic aneurysm - Marfan (see: Marfan syndrome)
  (Condition)
• Aortic aneurysm - thoracic (see: Thoracic aortic aneurysm)
  (Condition)
• Aortic arch anomaly (see: Double aortic arch)
  (Condition)
• Aortic arch syndrome
  (Condition)
• Aortic coarctation (see: Coarctation of the aorta)
  (Condition)
• Aortic dissection
  (Condition)
• Aortic insufficiency (see: Aortic regurgitation)
  (Condition)
• Aortic regurgitation
  (Condition)
• Aortic stenosis
  (Condition)
• Aortic valve prolapse (see: Aortic regurgitation)
  (Condition)
• Aortic valve stenosis (see: Aortic stenosis)
  (Condition)
• Aortopulmonary fenestration (see: Aortopulmonary window)
  (Condition)
• Aortopulmonary septal defect (see: Aortopulmonary window)
  (Condition)
• Aortopulmonary window
  (Condition)
• AOSD (see: Adult Still disease)
  (Condition)
• Apert syndrome
  (Condition)
• Aphthous ulcer (see: Canker sore)
  (Condition)
• Aplastic anemia
  (Condition)
• Apnea - neonatal (see: Apnea of prematurity)
  (Condition)
• Apnea - newborns (see: Apnea of prematurity)
  (Condition)
• Apnea - obstructive sleep apnea syndrome (see: Obstructive sleep apnea - adults)
  (Condition)
• Apnea - obstructive sleep apnea syndrome - adults (see: Obstructive sleep apnea - adults)
  (Condition)
• Apnea - pediatric sleep apnea syndrome (see: Pediatric sleep apnea)
  (Condition)
• Apnea of prematurity
  (Condition)
• Apolipoprotein B deficiency (see: Bassen-Kornzweig syndrome)
  (Condition)
• Apoplexy
  (Condition)
• Apparent life-threatening event (see: Brief resolved unexplained event - BRUE)
  (Condition)
• Appendicitis
  (Condition)
• Apraxia
  (Condition)
• Apraxia of speech (see: Apraxia)
  (Condition)
• Aprosencephaly with open cranium (see: Anencephaly)
  (Condition)
• Aquarium granuloma (see: Swimming pool granuloma)
  (Condition)
• ARDS (see: Acute respiratory distress syndrome)
  (Condition)
• Areolar gland abscess (see: Subareolar abscess)
  (Condition)
• ARF (see: Acute kidney failure)
  (Condition)
• Argentaffinoma syndrome (see: Carcinoid syndrome)
  (Condition)
• Arias syndrome (type II Crigler-Najjar) (see: Crigler-Najjar syndrome)
  (Condition)
• Arkless-Graham (see: Acrodysostosis)
  (Condition)
• Arnold Pick disease (see: Frontotemporal dementia)
  (Condition)
• Arrhenoblastoma (see: Sertoli-Leydig cell tumor)
  (Condition)
• Arrhythmia (see: Heart block)
  (Condition)
• Arrhythmia - cardiac arrest (see: Cardiac arrest)
  (Condition)
• Arrhythmia - PSVT (see: Paroxysmal supraventricular tachycardia (PSVT))
  (Condition)
• Arrhythmia - VF (see: Ventricular fibrillation)
  (Condition)
• Arrhythmia - WPW (see: Wolff-Parkinson-White syndrome (WPW))
  (Condition)
• Arrhythmias
  (Condition)
• ARSA deficiency (see: Metachromatic leukodystrophy)
  (Condition)
• Arterial embolism
  (Condition)
• Arterial insufficiency
  (Condition)
• Arterial insufficiency of the legs (see: Peripheral artery disease - legs)
  (Condition)
• Arterial spiders (see: Spider angioma)
  (Condition)
• Arteriolar nephrosclerosis (see: Malignant hypertension)
  (Condition)
• Arteriosclerosis (see: Atherosclerosis)
  (Condition)
• Arteriosclerosis obliterans (see: Peripheral artery disease - legs)
  (Condition)
• Arteriosclerotic heart disease (see: Coronary heart disease)
  (Condition)
• Arteriovenous hemangioma (see: Cerebral arteriovenous malformation)
  (Condition)
• Arteriovenous malformation - pulmonary (see: Pulmonary arteriovenous fistula)
  (Condition)
• Arteritis (see: Necrotizing vasculitis)
  (Condition)
• Arteritis - temporal (see: Giant cell arteritis)
  (Condition)
• Arthritis
  (Condition)
• Arthritis - neck (see: Cervical spondylosis)
  (Condition)
• Arthritis - osteoarthritis (see: Osteoarthritis)
  (Condition)
• Arthritis - psoriatic (see: Psoriatic arthritis)
  (Condition)
• Arthritis - rheumatoid (see: Rheumatoid arthritis)
  (Condition)
• Arthroscopy - ankle (see: Ankle arthroscopy)
  (Condition)
• Articulation deficiency (see: Speech disorders - children)
  (Condition)
• Articulation disorder (see: Speech disorders - children)
  (Condition)
• Articulation disorder (see: Phonological disorder)
  (Condition)
• Arylsulfatase A deficiency (see: Metachromatic leukodystrophy)
  (Condition)
• As and Bs (see: Apnea of prematurity)
  (Condition)
• Asbestosis
  (Condition)
• Ascariasis
  (Condition)
• Ascending paralysis (see: Guillain-Barre syndrome)
  (Condition)
• Ascites
  (Condition)
• Ascites - cirrhosis (see: Cirrhosis)
  (Condition)
• Ascites - peritonitis (see: Peritonitis - spontaneous bacterial)
  (Condition)
• ASCUS - dysplasia (see: Cervical dysplasia)
  (Condition)
• Aseptic necrosis (see: Osteonecrosis)
  (Condition)
• ASH (see: Hypertrophic cardiomyopathy)
  (Condition)
• Asherman syndrome
  (Condition)
• Asherman's syndrome (see: Asherman syndrome)
  (Condition)
• Aspartoacylase deficiency (see: Canavan disease)
  (Condition)
• Asperger syndrome (see: Autism spectrum disorder)
  (Condition)
• Aspergilloma (see: Pulmonary aspergilloma)
  (Condition)
• Aspergillosis
  (Condition)
• Aspergillosis - pulmonary aspergilloma (see: Pulmonary aspergilloma)
  (Condition)
• Aspergillus infection (see: Aspergillosis)
  (Condition)
• Aspiration of vomitus (see: Aspiration pneumonia)
  (Condition)
• Aspiration pneumonia
  (Condition)
• Aspiration pneumonia - chemical (see: Chemical pneumonitis)
  (Condition)
• Aspiration pneumonitis (see: Aspiration pneumonia)
  (Condition)
• Asteatotic eczema (see: Dry skin)
  (Condition)
• Asthma
  (Condition)
• Asthma - occupational exposure (see: Occupational asthma)
  (Condition)
• Asthma - pediatric (see: Asthma in children)
  (Condition)
• Asthma in children
  (Condition)
• Astigmatism
  (Condition)
• Astrocytoma - adults (see: Brain tumor - primary - adults)
  (Condition)
• Astrocytoma - children (see: Brain tumor - children)
  (Condition)
• Asymmetric septal hypertrophy (see: Hypertrophic cardiomyopathy)
  (Condition)
• Asymptomatic bacteriuria
  (Condition)
• Asymptomatic HIV infection
  (Condition)
• Ataxia - acute cerebellar (see: Acute cerebellar ataxia)
  (Condition)
• Ataxia - telangiectasia
  (Condition)
• Atelectasis
  (Condition)
• Atheroemboli - renal (see: Atheroembolic renal disease)
  (Condition)
• Atheroembolic renal disease
  (Condition)
• Atherosclerosis
  (Condition)
• Atherosclerosis - mesenteric artery (see: Mesenteric artery ischemia)
  (Condition)
• Atherosclerosis - small intestine (see: Small intestinal ischemia and infarction)
  (Condition)
• Atherosclerotic disease - renal (see: Atheroembolic renal disease)
  (Condition)
• Athlete's foot
  (Condition)
• ATN (see: Acute tubular necrosis)
  (Condition)
• Atopic dermatitis
  (Condition)
• Atopic dermatitis - lichen simplex chronicus (see: Lichen simplex chronicus)
  (Condition)
• Atopic keratoconjunctivitis (see: Allergic conjunctivitis)
  (Condition)
• Atrial fibrillation and atrial flutter
  (Condition)
• Atrial myxoma
  (Condition)
• Atrial septal defect (ASD)
  (Condition)
• Atrioventricular (AV) canal defect (see: Endocardial cushion defect)
  (Condition)
• Atrioventricular septal defect (see: Endocardial cushion defect)
  (Condition)
• Atrophic vaginitis (see: Vaginal dryness)
  (Condition)
• ATRT - children (see: Brain tumor - children)
  (Condition)
• Attention deficit hyperactivity disorder
  (Condition)
• Attention seeking - histrionic personality disorder (see: Histrionic personality disorder)
  (Condition)
• Attenuated MPS I (see: Mucopolysaccharidosis type I)
  (Condition)
• Atypical glandular cells - dysplasia (see: Cervical dysplasia)
  (Condition)
• Atypical Parkinson disease (see: Secondary parkinsonism)
  (Condition)
• Atypical Parkinson’s disease (see: Secondary parkinsonism)
  (Condition)
• Atypical pneumonia
  (Condition)
• Atypical squamous cells - dysplasia (see: Cervical dysplasia)
  (Condition)
• Aural polyps
  (Condition)
• Auricular fibrillation (see: Atrial fibrillation and atrial flutter)
  (Condition)
• Autism (see: Autism spectrum disorder)
  (Condition)
• Autism spectrum disorder
  (Condition)
• Autism spectrum disorder - Asperger syndrome
  (Condition)
• Autism spectrum disorder - childhood disintegrative disorder
  (Condition)
• Autistic disorder (see: Autism spectrum disorder)
  (Condition)
• Autistic spectrum disorder (see: Autism spectrum disorder)
  (Condition)
• Autistic spectrum disorder - Asperger (see: Autism spectrum disorder - Asperger syndrome)
  (Condition)
• Autoerythrocyte sensitivity
  (Condition)
• Autoimmune - ITP (see: Immune thrombocytopenic purpura (ITP))
  (Condition)
• Autoimmune disorder - vitiligo (see: Vitiligo)
  (Condition)
• Autoimmune disorders
  (Condition)
• Autoimmune hemolytic anemia (AIHA) (see: Immune hemolytic anemia)
  (Condition)
• Autoimmune hepatitis
  (Condition)
• Autoimmune thyroiditis (see: Chronic thyroiditis (Hashimoto disease))
  (Condition)
• Autonomic crises - familial dysautonomia (see: Familial dysautonomia)
  (Condition)
• Autonomic dysreflexia
  (Condition)
• Autonomic hyperreflexia (see: Autonomic dysreflexia)
  (Condition)
• Autonomic nerve disease (see: Autonomic neuropathy)
  (Condition)
• Autonomic neuropathy
  (Condition)
• Autosomal dominant polycystic kidney disease (see: Polycystic kidney disease)
  (Condition)
• Autosomal dominant tubulointerstitial kidney disease
  (Condition)
• Autosomal recessive congenital ichthyosis - lamellar ichthyosis type (see: Lamellar ichthyosis)
  (Condition)
• AV Block (see: Heart block)
  (Condition)
• Avascular necrosis (see: Osteonecrosis)
  (Condition)
• Avian influenza
  (Condition)
• Avian influenza A (HPAI) H5 (see: Avian influenza)
  (Condition)
• AVM (see: Angiodysplasia of the colon)
  (Condition)
• AVM - cerebral (see: Cerebral arteriovenous malformation)
  (Condition)
• AVN (see: Osteonecrosis)
  (Condition)
• Avoidant personality disorder
  (Condition)
• AVSD (see: Endocardial cushion defect)
  (Condition)
• Axillary nerve dysfunction
  (Condition)
• Azotemia - prerenal (see: Prerenal azotemia)
  (Condition)