Definition The flanks are the sides of the abdomen, located between the ribs and the pelvis, or hipbone. Flank pain refers to any pain or discomfort in this area.
What is going on in the body? Flank pain usually only occurs on one side, but may be mild or severe. There are many possible causes, ranging from unimportant to serious.
What are the signs and symptoms of the condition? When someone complains of flank pain, the doctor may ask questions, such as:
exactly where the pain is located
when the pain started
the type of pain, such as sharp, dull, or crampy
whether the person has ever had this type of pain before
whether the pain is constant or only occurs sometimes
whether there has been any injury to the painful area
whether anything makes the pain better or worse
whether or not there has been any other symptoms, such as swelling, rash, or fever
what other medical conditions a person has, if any
what medications, drugs, or herbs a person takes, if any
What are the causes and risks of the condition? There are many possible causes of flank pain. Common causes include:
a tumour or cancer inside the abdomen, such as bowel cancer
Other causes are also possible. Sometimes a cause cannot be found.
What can be done to prevent the condition? Avoidance of alcohol abuse could prevent many cases of flank pain from hepatitis or pancreatitis. A vaccine is available to prevent certain forms of hepatitis. Drinking plenty of fluids every day can sometimes prevent kidney stones. Many of the causes of flank pain cannot be prevented.
How is the condition diagnosed? The diagnosis of flank pain begins with a complete medical history and physical examination. The doctor may then order tests, such as:
What are the long-term effects of the condition? irritable bowel syndrome may make a person uncomfortable and even depressed, but poses no serious long-term health risks. A small kidney stone may pass by itself and have no long-term effects. A large kidney stone may require surgery to remove. appendicitis and cancer may lead to death if treatment doesn't work.
What are the risks to others? Flank pain is not contagious and usually poses no risk to others. If the cause is an infection, the infection may be contagious.
What are the treatments for the condition? Analgesia can be given as needed for relief of the flank pain. Stronger medications for pain, such as morphine, may be needed in some cases. Those with a kidney stone may be able to pass the stone into their urine. If the stone passes, no other treatment is needed. If the stone doesn't pass, surgery may be needed to remove it.
What are the side effects of the treatments? Side effects depend on the treatments used. For instance, antibiotics can cause allergic reactions and stomach upset. Any surgery carries a risk of bleeding, infection, and allergic reaction to anaesthesia.
What happens after treatment for the condition? Someone who passes a kidney stone or has it removed may not need any further treatment. A person with irritable bowel syndrome may need long-term treatment for pain flare-ups. An individual with cancer may need long-term treatment for the cancer and may die if treatment doesn't work.
How is the condition monitored? Monitoring will depend on the cause of the flank pain. Any new or worsening symptoms should be reported to the doctor.
Author: Adam Brochert, MD Reviewer: eknowhow Medical Review Panel Editor: Dr John Hearne Last Updated: 12/06/2005 Contributors Potential conflict of interest information for reviewers available on request
