DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Perianal dermatitis. Dermatitis is an inflammation of the skin, which may be accompanied by a red, itchy rash. It may have a number of causes, including bacterial infection, allergic reaction or stress. In many cases the cause is not known. Drugs may be given to relieve the inflammation and itching.
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