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Flank pain

Show Alternative Names
Pain - side
Side pain

Flank pain is pain in one side of the body between the upper belly area (abdomen) and the back.

Considerations

Flank pain can be a sign of a kidney problem. But, since many organs are in this area, other causes are possible. If you have flank pain and fever, chills, blood in the urine, or frequent or urgent urination, then a kidney problem is the likely cause. It could be a sign of kidney stones.

Causes

Flank pain may be caused by any of the following:

  • Arthritis or infection of the spine
  • Back problem, such as disk disease
  • Gallbladder disease
  • Gastrointestinal disease
  • Liver disease
  • Muscle spasm
  • Kidney stone, infection, or abscess
  • Shingles (pain with one-sided rash)
  • Spinal fracture

Home Care

Treatment depends on the cause.

Rest, physical therapy, and exercise may be recommended if the pain is caused by muscle spasm. You will be taught how to do these exercises at home.

Nonsteroidal anti-inflammatory drugs (NSAIDs) and physical therapy may be prescribed for flank pain caused by spinal arthritis.

Antibiotics are used to treat most kidney infections. You will also receive fluids and pain medicine. You may need to stay in the hospital.

When to Contact a Medical Professional

Contact your health care provider if you have any of the following:

  • Flank pain along with a high fever, chills, nausea, or vomiting
  • Blood (red or brown color) in the urine
  • Unexplained flank pain that continues

What to Expect at Your Office Visit

The provider will examine you. You will be asked about your medical history and symptoms, including:

  • Location of the pain
  • When the pain began, if it's always there or comes and goes, if it's getting worse
  • If your pain is related to activities or bending over
  • What the pain feels like, such as dull and aching or sharp
  • What other symptoms you have

The following tests may be done:

Review Date: 4/24/2023

Reviewed By

C. Benjamin Ma, MD, Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery, San Francisco, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

References

Landry DW, Bazari H. Approach to the patient with renal disease. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 106.

McQuaid KR. Approach to the patient with gastrointestinal disease. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 123.

Millham FH. Acute abdominal pain. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 11.

Seller RH, Symons AB. Abdominal pain in adults. In: Seller RH, Symons AB, eds. Differential Diagnosis of Common Complaints. 7th ed. Philadelphia, PA: Elsevier; 2018:chap 1.

Disclaimer

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. © 1997- A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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Anatomical landmarks adult - back - Illustration Thumbnail

Anatomical landmarks adult - back

There are three body views (front, back, and side) that can help you to identify a specific body area. The labels show areas of the body which are identified either by anatomical or by common names. For example, the back of the knee is called the “popliteal fossa,” while the “flank” is an area on the side of the body.

Illustration

Anatomical landmarks adult - front - Illustration Thumbnail

Anatomical landmarks adult - front

There are three body views (front, back, and side) that can help you to identify a specific body area. The labels show areas of the body which are identified either by anatomical or by common names. For example, the back of the knee is called the “popliteal fossa,” while the “flank” is an area on the side of the body.

Illustration

Anatomical landmarks adult - side - Illustration Thumbnail

Anatomical landmarks adult - side

There are three body views (front, back, and side) that can help you to identify a specific body area. The labels show areas of the body which are identified either by anatomical or by common names. For example, the back of the knee is called the “popliteal fossa,” while the “flank” is an area on the side of the body.

Illustration

 
 
Anatomical landmarks adult - back - Illustration Thumbnail

Anatomical landmarks adult - back

There are three body views (front, back, and side) that can help you to identify a specific body area. The labels show areas of the body which are identified either by anatomical or by common names. For example, the back of the knee is called the “popliteal fossa,” while the “flank” is an area on the side of the body.

Illustration

Anatomical landmarks adult - front - Illustration Thumbnail

Anatomical landmarks adult - front

There are three body views (front, back, and side) that can help you to identify a specific body area. The labels show areas of the body which are identified either by anatomical or by common names. For example, the back of the knee is called the “popliteal fossa,” while the “flank” is an area on the side of the body.

Illustration

Anatomical landmarks adult - side - Illustration Thumbnail

Anatomical landmarks adult - side

There are three body views (front, back, and side) that can help you to identify a specific body area. The labels show areas of the body which are identified either by anatomical or by common names. For example, the back of the knee is called the “popliteal fossa,” while the “flank” is an area on the side of the body.

Illustration

 
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