Black Piedra

Excerpt

Black piedra is a fungal infection of the hair shafts. It is also known as Trichomycosis nodosa. The fungal elements are attached to the hair shaft to form nodules along the hair shaft. It predominantly affects scalp hair, although involvement of the beard, mustache, and pubic hairs is also known. Black piedra is common in hot and humid countries like South American countries and Southeast Asian countries. Black piedra is rare in Europe. It can affect humans as well as other primates.