Hidradenitis

**Definition:** The inflammation of a sweat gland (usually of the apocrine type). The condition can be idiopathic or occur as a result of or in association with another underlying condition. Neutrophilic eccrine hidradenitis is a relatively rare variant that has been reported in patients undergoing chemotherapy, usually for non-Hodgkin lymphomas or leukemic conditions.

**Tree numbers:** - C17.800.946.315

**Synonyms:** - Hidrosadenitis - Hydradenitis