Diseases & Conditions
- O'nyong-nyong fever (see:
Dengue fever)
(Condition)
- OA (see:
Osteoarthritis)
(Condition)
- Obese - children (see:
Obesity in children)
(Condition)
-
Obesity
(Condition)
- Obesity - central sleep apnea (see:
Central sleep apnea)
(Condition)
-
Obesity hypoventilation syndrome (OHS)
(Condition)
-
Obesity in children
(Condition)
- OBS (see:
Neurocognitive disorder)
(Condition)
-
Obsessive-compulsive disorder
(Condition)
- Obsessive-compulsive neurosis (see:
Obsessive-compulsive disorder)
(Condition)
-
Obsessive-compulsive personality disorder
(Condition)
- Obstetrical brachial plexus palsy (see:
Brachial plexus injury in newborns)
(Condition)
- Obstruction of the ureteropelvic junction (see:
Ureteropelvic junction obstruction)
(Condition)
-
Obstructive sleep apnea - adults
(Condition)
-
Obstructive uropathy
(Condition)
- Obstructive uropathy - hydronephrosis (see:
Hydronephrosis of one kidney)
(Condition)
- Occlusion - renal vein (see:
Renal vein thrombosis)
(Condition)
-
Occupational asthma
(Condition)
- Occupational bronchitis (see:
Industrial bronchitis)
(Condition)
-
Occupational hearing loss
(Condition)
- OCD (see:
Obsessive-compulsive disorder)
(Condition)
- OCPD (see:
Obsessive-compulsive personality disorder)
(Condition)
- Ocular albinism (see:
Albinism)
(Condition)
- Ocular diabetic neuropathy (see:
Cranial mononeuropathy III - diabetic type)
(Condition)
- Ocular larva migrans (see:
Visceral larva migrans)
(Condition)
- Ocular melanoma (see:
Melanoma of the eye)
(Condition)
- Oculocutaneous albinism (see:
Albinism)
(Condition)
- Oculoglandular syndrome (see:
Parinaud oculoglandular syndrome)
(Condition)
- Oculomotor palsy (see:
Cranial mononeuropathy III)
(Condition)
- Oculosympathetic paresis (see:
Horner syndrome)
(Condition)
- Odontogenic abscess (see:
Tooth abscess)
(Condition)
- ODS (see:
Osmotic demyelination syndrome)
(Condition)
- Ogilvie syndrome (see:
Intestinal pseudo-obstruction)
(Condition)
- Ogilvie's syndrome (see:
Intestinal pseudo-obstruction)
(Condition)
- Ohara disease (see:
Tularemia)
(Condition)
- Ohio River Valley fever (see:
Histoplasmosis)
(Condition)
- OHSS (see:
Ovarian hyperstimulation syndrome)
(Condition)
- OI (see:
Osteogenesis imperfecta)
(Condition)
- Old world leishmaniasis (see:
Leishmaniasis)
(Condition)
- Olecranon bursitis (see:
Bursitis)
(Condition)
- Oligodendroglioma - adults (see:
Brain tumor - primary - adults)
(Condition)
- Oligodendroglioma - children (see:
Brain tumor - children)
(Condition)
- Oligohydramnios (see:
Placental insufficiency)
(Condition)
- Olivopontocerebellar atrophy (see:
Multiple system atrophy - cerebellar subtype)
(Condition)
- Olivopontocerebellar atrophy - supranuclear ophthalmoplegia (see:
Supranuclear ophthalmoplegia)
(Condition)
- Olivopontocerebellar degeneration (see:
Multiple system atrophy - cerebellar subtype)
(Condition)
- OME (see:
Otitis media with effusion)
(Condition)
-
Omphalocele
(Condition)
- Ondine's curse (see:
Primary alveolar hypoventilation)
(Condition)
- Onychocryptosis (see:
Ingrown toenail)
(Condition)
- Onychomycosis (see:
Fungal nail infection)
(Condition)
- Oophoritis (see:
Pelvic inflammatory disease (PID))
(Condition)
- OPCA (see:
Multiple system atrophy - cerebellar subtype)
(Condition)
- Open bite (see:
Malocclusion of teeth)
(Condition)
- Open-angle glaucoma (see:
Glaucoma)
(Condition)
- Ophiasis (see:
Alopecia areata)
(Condition)
- Ophthalmia neonatorum (see:
Neonatal conjunctivitis)
(Condition)
- Ophthalmopathy - Graves (see:
Graves disease)
(Condition)
-
Opiate and opioid withdrawal
(Condition)
- Opioid abuse - intoxication (see:
Opioid intoxication)
(Condition)
-
Opioid intoxication
(Condition)
- Opioid use - intoxication (see:
Opioid intoxication)
(Condition)
- Opioid withdrawal (see:
Opiate and opioid withdrawal)
(Condition)
- Opoid withdrawal (see:
Opiate and opioid withdrawal)
(Condition)
-
Oppositional defiant disorder
(Condition)
- OPSI (see:
Post-splenectomy complications)
(Condition)
- Optic atrophy (see:
Optic nerve atrophy)
(Condition)
-
Optic glioma
(Condition)
- Optic glioma - children (see:
Brain tumor - children)
(Condition)
- Optic nerve - optic neuritis (see:
Optic neuritis)
(Condition)
-
Optic nerve atrophy
(Condition)
- Optic nerve glioma (see:
Optic glioma)
(Condition)
-
Optic neuritis
(Condition)
- Optic neuropathy (see:
Optic nerve atrophy)
(Condition)
-
Oral cancer
(Condition)
- Oral herpes simplex (see:
Herpes - oral)
(Condition)
- Oral HPV infection (see:
Oral human papillomavirus infection)
(Condition)
-
Oral human papillomavirus infection
(Condition)
- Oral hypoglycemic - type 2 diabetes (see:
Type 2 diabetes)
(Condition)
-
Oral mucous cyst
(Condition)
- Oral thrush (see:
Thrush - children and adults)
(Condition)
- Oral thrush (see:
Thrush in newborns)
(Condition)
- Oral thrush - newborn (see:
Thrush in newborns)
(Condition)
- Oral ulcer (see:
Mouth ulcers)
(Condition)
-
Orbital cellulitis
(Condition)
-
Orbital pseudotumor
(Condition)
-
Orchitis
(Condition)
- Organic brain syndrome (see:
Neurocognitive disorder)
(Condition)
- Organic mental disorder (OMS) (see:
Neurocognitive disorder)
(Condition)
- Ormond's disease (see:
Retroperitoneal fibrosis)
(Condition)
- Ornithosis (see:
Psittacosis)
(Condition)
- Orofacial dyskinesia (see:
Tardive dyskinesia)
(Condition)
- Oropharyngeal cancer - HPV (see:
Oral cancer)
(Condition)
- Oropharyngeal HPV infection (see:
Oral human papillomavirus infection)
(Condition)
- Orthopoxvirus (see:
Mpox)
(Condition)
- Orthostatic hypotension (see:
Low blood pressure)
(Condition)
- OSA (see:
Obstructive sleep apnea - adults)
(Condition)
- OSA - adults (see:
Obstructive sleep apnea - adults)
(Condition)
- Oseltamivir (Tamiflu) - flu (see:
Flu)
(Condition)
-
Osgood-Schlatter disease
(Condition)
- Osler's disease (see:
Polycythemia vera)
(Condition)
- Osler-Weber-Rendu disease (see:
Hereditary hemorrhagic telangiectasia)
(Condition)
- Osler-Weber-Rendu syndrome (see:
Hereditary hemorrhagic telangiectasia)
(Condition)
-
Osmotic demyelination syndrome
(Condition)
-
Osmotic diuresis
(Condition)
- Osteitis deformans (see:
Paget disease of the bone)
(Condition)
-
Osteitis fibrosa
(Condition)
- Osteitis fibrosa cystica (see:
Osteitis fibrosa)
(Condition)
-
Osteoarthritis
(Condition)
- Osteoarthrosis (see:
Osteoarthritis)
(Condition)
- Osteochondrosis (see:
Osgood-Schlatter disease)
(Condition)
- Osteodental dysplasia (see:
Cleidocranial dysostosis)
(Condition)
-
Osteogenesis imperfecta
(Condition)
- Osteogenic sarcoma (see:
Osteosarcoma)
(Condition)
-
Osteomalacia
(Condition)
- Osteomalacia in children (see:
Rickets)
(Condition)
- Osteomas (see:
Benign ear cyst or tumor)
(Condition)
-
Osteomyelitis
(Condition)
-
Osteomyelitis in children
(Condition)
- Osteomyelitis of the skull (see:
Malignant otitis externa)
(Condition)
-
Osteonecrosis
(Condition)
- Osteopenia - hyperparathyroidism (see:
Hyperparathyroidism)
(Condition)
- Osteopenia - parathyroid adenoma (see:
Parathyroid adenoma)
(Condition)
- Osteopenia - parathyroid hyperplasia (see:
Parathyroid hyperplasia)
(Condition)
-
Osteopenia - premature infants
(Condition)
- Osteopenia of prematurity (see:
Osteopenia - premature infants)
(Condition)
-
Osteoporosis
(Condition)
- Osteoporosis - compression fracture (see:
Compression fractures of the back)
(Condition)
- Osteoporosis - hyperparathyroidism (see:
Hyperparathyroidism)
(Condition)
- Osteoporosis - parathyroid adenoma (see:
Parathyroid adenoma)
(Condition)
- Osteoporosis - parathyroid hyperplasia (see:
Parathyroid hyperplasia)
(Condition)
-
Osteosarcoma
(Condition)
- Ostium primum atrial septal defects (see:
Endocardial cushion defect)
(Condition)
- Otic polyp (see:
Aural polyps)
(Condition)
-
Otitis
(Condition)
- Otitis externa - acute (see:
Swimmer's ear )
(Condition)
- Otitis externa - chronic (see:
Swimmer's ear )
(Condition)
- Otitis externa - malignant (see:
Malignant otitis externa)
(Condition)
- Otitis media - acute (see:
Ear infection - acute)
(Condition)
- Otitis media - chronic (see:
Ear infection - chronic)
(Condition)
-
Otitis media with effusion
(Condition)
-
Otosclerosis
(Condition)
- Otospongiosis (see:
Otosclerosis)
(Condition)
- Ovalocytosis - hereditary (see:
Hereditary ovalocytosis)
(Condition)
-
Ovarian cancer
(Condition)
- Ovarian cancer - Sertoli-Leydig cell tumor (see:
Sertoli-Leydig cell tumor)
(Condition)
-
Ovarian cysts
(Condition)
- Ovarian failure (see:
Hypogonadism)
(Condition)
-
Ovarian hyperstimulation syndrome
(Condition)
- Ovarian hypofunction (see:
Premature ovarian failure)
(Condition)
- Ovarian insufficiency (see:
Premature ovarian failure)
(Condition)
-
Ovarian overproduction of androgens
(Condition)
- Overactive bladder (see:
Urge incontinence)
(Condition)
- Overactive parathyroid (see:
Hyperparathyroidism)
(Condition)
- Overactive parathyroid - parathyroid hyperplasia (see:
Parathyroid hyperplasia)
(Condition)
- Overactive parathyroid gland - parathyroid adenoma (see:
Parathyroid adenoma)
(Condition)
- Overactive thyroid (see:
Hyperthyroidism)
(Condition)
- Overactive thyroid - toxic nodular goiter (see:
Toxic nodular goiter)
(Condition)
- Overbite (see:
Malocclusion of teeth)
(Condition)
- Overgrowth - intestinal bacteria (see:
Small bowel bacterial overgrowth)
(Condition)
- Overpressure therapy - Ménière disease (see:
Meniere disease)
(Condition)
- Overproduction of growth hormone (see:
Gigantism)
(Condition)
- Overwhelming post-splenectomy infection (see:
Post-splenectomy complications)
(Condition)
- Ovulation pain (see:
Mittelschmerz)
(Condition)
- Owren disease (see:
Factor V deficiency)
(Condition)
- Owren's disease (see:
Factor V deficiency)
(Condition)
- Oxycodone - opiate withdrawal (see:
Opiate and opioid withdrawal)
(Condition)
- Oxycontin - opiate withdrawal (see:
Opiate and opioid withdrawal)
(Condition)
- Oxyuriasis (see:
Pinworms)
(Condition)
-
Ozena
(Condition)
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