ants and Alopecia-Areata

Localized scalp hair loss is associated with many processes, including alopecia areata, trichotillomania, tinea capitis, and early lupus erythematosus. There are several reports of localized alopecia after tick- and flea-bites and bee stings, but there are only two reports of ant-induced alopecia in the literature. We present two cases of alopecia induced by ants of genus Pheidole (species pallidula) and review the literature for insect-induced alopecia. Ant-induced alopecia should be considered in the differential diagnosis of localized sudden-onset alopecia, at least in some geographic areas of the world.

Topics: Adult; Alopecia; Alopecia Areata; Animals; Ants; Appetitive Behavior; Bedding and Linens; Diagnosis, Differential; Female; Humans; Iran; Male; Scalp; Tinea Capitis; Trichotillomania

Localized hair shedding caused by Pheidole ants is reported as a newly recognized type of hair loss, mimicking alopecia areata. We report two cases from Kerman, Iran. This sudden hair loss demonstrates that ants such as the Pheidole dimorphic species can cause hair shedding. Fairly clean cutting of the scalp hair takes place just a few micrometers above the skin surface and simulates alopecia areata or mechanical shaving of scalp hair. This infestation has not been reported from other countries, and this report is the second from Iran.

Topics: Adolescent; Adult; Alopecia Areata; Animals; Ants; Ectoparasitic Infestations; Female; Humans; Male; Scalp