Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Piedra
Introduction
Piedra is a hair disease caused by a fungus.[1]
Types include:
Gallery
Gallery
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![Under a relatively-low magnification of 100X, this photomicrograph reveals some of the pathologic morphology displayed by a primate hair shaft indicative of the disease known as, “black piedra”, also known as “trichosporosis”, which is caused by the fungal organism, Piedraia hortae. From Public Health Image Library (PHIL). [2]](https://www.wikidoc.org/images/2/2e/Black_piedra01.jpeg)
Under a relatively-low magnification of 100X, this photomicrograph reveals some of the pathologic morphology displayed by a primate hair shaft indicative of the disease known as, “black piedra”, also known as “trichosporosis”, which is caused by the fungal organism, Piedraia hortae. From Public Health Image Library (PHIL). [2] -
![This is a photomicrograph of a hair shaft with a condition called “black piedra” due to Piedraia hortae. From Public Health Image Library (PHIL). [2]](https://www.wikidoc.org/images/4/47/Black_piedra03.jpeg)
This is a photomicrograph of a hair shaft with a condition called “black piedra” due to Piedraia hortae. From Public Health Image Library (PHIL). [2] -
![This is a photomicrograph of the mycelium of the fungus Piedraia hortae, magnified 475X. From Public Health Image Library (PHIL). [2]](https://www.wikidoc.org/images/4/43/Black_piedra04.jpeg)
This is a photomicrograph of the mycelium of the fungus Piedraia hortae, magnified 475X. From Public Health Image Library (PHIL). [2] -
![This is a plate culture of Piedraia hortae, strain A272. From Public Health Image Library (PHIL). [2]](https://www.wikidoc.org/images/9/9a/Black_piedra05.jpeg)
This is a plate culture of Piedraia hortae, strain A272. From Public Health Image Library (PHIL). [2]
![Under a relatively-low magnification of 100X, this photomicrograph reveals some of the pathologic morphology displayed by a primate hair shaft indicative of the disease known as, “black piedra”, also known as “trichosporosis”, which is caused by the fungal organism, Piedraia hortae. From Public Health Image Library (PHIL). [2]](https://www.wikidoc.org/index.php/File%3ABlack_piedra01.jpeg)
![This is a photomicrograph of a hair shaft with a condition called “black piedra” due to Piedraia hortae. From Public Health Image Library (PHIL). [2]](https://www.wikidoc.org/index.php/File%3ABlack_piedra03.jpeg)
![This is a photomicrograph of the mycelium of the fungus Piedraia hortae, magnified 475X. From Public Health Image Library (PHIL). [2]](https://www.wikidoc.org/index.php/File%3ABlack_piedra04.jpeg)
![This is a plate culture of Piedraia hortae, strain A272. From Public Health Image Library (PHIL). [2]](https://www.wikidoc.org/index.php/File%3ABlack_piedra05.jpeg)