White piedra is a fungal infection of the hair shaft. This infection is caused by a type of yeast known as trichomycosis, which coats the hair in a white substance. This type of infection can happen to any hair on the body, including eyebrows, eyelashes, mustaches, beards, and pubic hair.
What is the cause of black Piedra?
Black piedra is a fungal infection of the hair shafts of humans and animals caused by Piedraia hortae. The source of the organism appears to be the soil; in some cases, exposure results from use of plant oil in hair.
What is Trichosporon Asahii?
Trichosporon asahii is an opportunistic fungus that causes infections in immunosuppressed patients. Neutropenia developing due to malignancies is an important risk factor for fungal infection.
How do you cure Piedra?
Black piedra is treated by using oral terbinafine. White piedra can be treated by using topical antifungals, including imidazoles, ciclopirox olamine, 2% selenium sulfide, 6% precipitated sulfur in petroleum, chlorhexidine solution, Castellani paint, zinc pyrithione, and amphotericin B lotion.
What is the chromoblastomycosis?
Chromoblastomycosis is a chronic fungal infection of the skin and subcutaneous tissue. The infection usually results from a traumatic injury and inoculation of microorganism from a specific group of dematiaceous fungi (usually Fonsecaea pedrosoi, Phialophora verrucosa, Cladophialophora carrionii).
Where is chromoblastomycosis found?
Chromoblastomycosis occurs around the world, most commonly in rural areas in tropical or subtropical climates. It is most common in rural areas between approximately 30°N and 30°S latitude. Madagascar and Japan have the highest incidence. Over two-thirds of patients are male, and usually between the ages of 30 and 50.
What is the pathophysiology of Piedra infection?
Piedra is a superficial fungal infection of the hair shaft seen most commonly in tropical climates. It presents in two distinct clinical varieties, black piedra and white piedra, caused by Piedraia hortae and Trichosporon species, respectively. Black piedra occurs in the tropical regions of the Americas and Southeast Asia.
What is Piedraia hortae and what causes it?
Piedraia hortae causes the formation of nodules on the hair shaft, a clinical superficial disease commonly known as black piedra. Black piedra is usually seen in tropical regions and it usually targets humans of all ages and targets the scalp, moustache and occasionally pubic hair.
What is black piedra and what causes it?
Black piedra is a fungal infection of the hair shafts of humans and animals caused by Piedraia hortae.
What is white piedra?
Piedra, which means stone in Spanish, refers to a superficial infection of the hair shaft, which was first described in 1969 (Beigel, 1869 ). Two types of piedra are clinically recognized—white and black piedra, both of which have distinct characteristics. White piedra is more common in temperate and semitropical climates.
