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Athlete's foot, known medically as tinea pedis, is a common skin infection of the feet caused by a fungus. [2] Signs and symptoms often include itching, scaling, cracking and redness. [3] In rare cases the skin may blister. [6] Athlete's foot fungus may infect any part of the foot, but most often grows between the toes. [3]
Trichophyton rubrum is a dermatophytic fungus in the phylum Ascomycota.It is an exclusively clonal, [2] anthropophilic saprotroph that colonizes the upper layers of dead skin, and is the most common cause of athlete's foot, fungal infection of nail, jock itch, and ringworm worldwide. [3]
Tinea cruris is often associated with athlete's foot and fungal nail infections. [ 4 ] [ 5 ] Rubbing from clothing, excessive sweating, diabetes and obesity are risk factors. [ 6 ] [ 8 ] It is contagious and can be transmitted person-to-person by skin-to-skin contact or by contact with contaminated sports clothing and sharing towels.
Infected hair shafts are broken off just at the base, leaving a black dot just under the surface of the skin, and alopecia can result. [3] Scraping these residual black dot will yield the best diagnostic scrapings for microscopic exam. Numerous green arthrospores will be seen under the microscope inside the stubbles of broken hair shafts at 400×.
The fluorescent material is not the fungus itself (which does not fluoresce), but rather an excretory product of the fungus which sticks to hairs. Infected skin does not fluoresce. Microscopic test: The veterinarian takes hairs from around the infected area and places them in a staining solution to view under the microscope.
The global and US anti-doping agencies are at odds over undercover tactics used by the American body to try to catch drug cheats, Reuters has learned.. The World Anti-Doping Agency (WADA) says US ...
The scrapings are placed directly onto a microscope slide and are covered with 10% or 20% potassium hydroxide. The slide is left to stand until clear, normally between five and fifteen minutes, in order to dissolve skin cells, hair, and debris. To enhance clearing dimethyl sulfoxide can be added to the slide.
The article, which drew plenty of criticism upon publication, was an attempt to, in Public Editor Margaret Sullivan's words, "illuminate a pervasive problem in women's sports, the old and ...