ON THIS PAGE: You will find a list of common tests and procedures that doctors use to find the cause of a medical problem. Use the menu to see other pages.

Doctors use many tests to find, or diagnose, mastocytosis. Doctors may also do tests to learn which treatments could work best.

A biopsy is the only sure way for the doctor to know whether an area of the body has mastocytosis. In a biopsy, the doctor takes a small sample of tissue for testing in a laboratory. If a biopsy is not possible, the doctor may suggest other tests that will help make a diagnosis.

ON THIS PAGE: You will find out more about body changes and other things that can signal a problem that may need medical care. Use the menu to see other pages.

People with mastocytosis may experience the following symptoms or signs. Sometimes, people with mastocytosis do not have any of these changes. Or, the cause of a symptom may be a different medical condition that is not mastocytosis.

General symptoms of mastocytosis

• Hives

• Red, itchy rash

• Diarrhea

• Abdominal pain

• Fainting

ON THIS PAGE: You will find out more about the factors that increase the chance of developing this condition. Use the menu to see other pages.