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Dermatophytosis is a clinical condition caused by fungal infection of the skin in humans, pets such as cats, and domesticated animals such as sheep, goats and cattle. The most common term for the infection, "ringworm", is a misnomer, since the condition is caused by fungi of several different species and not by parasitic worms. The fungi that cause parasitic infection, collectively dermatophytes, feed on keratin, the material found in the outer layer of skin, hair, and nails. These fungi thrive on warm and moist skin, but may also survive directly on the outsides of hair shafts or in their interiors. In pets, the fungus responsible for the disease survives in skin and on the outer surface of hairs. Currently, up to 20% of the population may be infected by dermatophytes at any given time. It is especially common among people who play sports involving skin-to-skin contact, wrestling in particular. Wrestlers with ringworm may be withheld from competition until their skin condition is deemed noninfectious by the proper authorities.〔(【引用サイトリンク】 author = Decorby, MaryAnn, Director of the British Columbia Wrestling Association )〕 == Classification == A number of different species of fungi are involved in dermatophytosis. Dermatophytes of the genera ''Trichophyton'' and ''Microsporum'' are the most common causative agents. These fungi attack various parts of the body and lead to the conditions listed below. The Latin names are for the conditions (disease patterns), not the agents that cause them. The disease patterns below identify the type of fungus that causes them only in the cases listed: * Dermatophytosis * * Tinea pedis (athlete's foot) – fungal infection of the feet * * Tinea unguium – fungal infection of the fingernails and toenails, and the nail bed * * Tinea corporis – fungal infection of the arms, legs, and trunk * * Tinea cruris (jock itch) – fungal infection of the groin area * * Tinea manuum – fungal infection of the hands and palm area * * Tinea capitis – fungal infection of the scalp and hair * * Tinea barbae – fungal infestation of facial hair * * Tinea faciei (face fungus) – fungal infection of the face * Other superficial mycoses (not classic ringworm, since not caused by dermatophytes) * * Tinea versicolor – caused by ''Malassezia furfur'' * * Tinea nigra – caused by ''Hortaea werneckii'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dermatophytosis」の詳細全文を読む スポンサード リンク
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