Pregnancy SmartSite^TM

• Home
• Email
• Site Map
• Contact

• Normal Pregnancy
• Labor & Delivery
• Complications
• After Your Child Is Born

Normal Pregnancy

Staying Healthy

Alcohol and pregnancy Managing your weight gain in pregnancy Steps to take before you get pregnant When you need to gain more weight during pregnancy

What to expect during pregnancy

Aches and pains during pregnancy Choosing the right practitioner Common symptoms during pregnancy Hyperemesis Gravidarum Morning sickness Pregnancy and travel Pregnancy and work Problems sleeping during pregnancy Skin and hair changes during pregnancy Teenage pregnancy

Preparing to go home with your baby

Cribs and crib safety Eat right during pregnancy Preparing your other children

Visits and Tests

Amniocentesis Chorionic villus sampling Genetic counseling before pregnancy Glucose tolerance test-pregnancy Monitoring your baby before labor Nuchal translucency Prenatal care in your first trimester Prenatal care in your second trimester Prenatal care in your third trimester

Flank pain

Definition

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:

• Abdominal CT scan

• Blood tests to check kidney and liver function

• Ultrasound to look at your internal organs

• Chest or abdominal x-ray

• Kidney or abdominal ultrasound

• Lumbosacral spine x-ray

• Tests to check the kidneys and bladder, such as urinalysis and urine culture, or cystourethrogram

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.

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.