Angiolymphoid hyperplasia with eosinophilia.

Angiolymphoid hyperplasia with eosinophilia is a rare, benign skin disease of unknown etiology. In the western hemisphere it occurs mostly in females and is located mostly in the head and neck. Microscopically, it is characterized by dermal and subcutaneous infiltration of chronic inflammatory cells, especially eosinophils; neocapillary formation; and lymphohistiocytic hyperplasia. Effective treatment requires total excision.