Piedra is a
hair disease caused by a
fungus
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from th ...
, which causes formation of nodules on the hair shaft.
[Veasey JV, Avila RB, Miguel BAF, Muramatu LH. White piedra, black piedra, tinea versicolor, and tinea nigra: contribution to the diagnosis of superficial mycosis. ''An Bras Dermatol''. 2017 May-Jun;92(3):413-416. ]
Types include:
*
White piedra
*
Black piedra
References
External links
{{Mycoses
Mycosis-related cutaneous conditions
Animal fungal diseases
Human hair