Pruritus Ani (Buttocks Itching)
Description
An intense itching and urge to scratch in and around the anus. The symptoms are most noticeable at night or after a bowel movement. Some people will experience a burning sensation or note occasional bleeding when wiping after a bowel movement. The most common causes are prolonged moisture in the area, certain foods, topical irritants, and rarely a parasite called pinworms. This is a common problem that affects up to 5% of the population.
Symptoms
Itching in and around the anus, burning sensation, slight bleeding.
Tests
A history and physical exam will be performed. If pinworms are suspected a tape test is done. Rarely a biopsy is taken.
Treatment
Treatment is directed at the care of the skin. Skin care consists of gently cleansing the skin by patting, and air drying the area. Alcohol or scented lotions should not be used. Anti-parasitic medication (mebendazole or albendazole) is prescribed if the cause is pinworms.
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