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Onychomycosis, also known as tinea unguium, is a contagious infection of the nail caused by the same fungal organisms which cause ringworm of the skin (Trichophyton rubrum or T. mentagrophytes, rarely other trichophyton species or Epidermophyton floccosum [1]).
When onychomycosis is due to a dermatophyte infection, it is termed tinea unguium. Trichophyton rubrum is the most common dermatophyte involved in onychomycosis. Other dermatophytes that may be involved are T. interdigitale, Epidermophyton floccosum, Tricholosporum violaceum, Microsporum gypseum, T. tonsurans, and T. soudanense.
Onychomycosis (also known as "dermatophytic onychomycosis", or "tinea unguium" [2] is a fungal infection of the nail. [8] It is the most common disease of the nails and constitutes about half of all nail abnormalities. [9] This condition may affect toenails or fingernails, but toenail infections are particularly common. It occurs in about 10% ...
Paronychia is an inflammation of the skin around the nail, often due to bacteria or fungi. Its sudden (acute) occurrence is usually due to the bacterium Staphylococcus aureus . Gradual (chronic) occurrences are typically caused by fungi, commonly Candida albicans .
[3] [6] Superficial fungal infections include common tinea of the skin, such as tinea of the body, groin, hands, feet and beard, and yeast infections such as pityriasis versicolor. [7] Subcutaneous types include eumycetoma and chromoblastomycosis, which generally affect tissues in and beneath the skin.
Involvement of the nails is termed onychomycosis. Animals including dogs and cats can also be affected by ringworm, and the disease can be transmitted between animals and humans, making it a zoonotic disease. Specific signs can be: red, scaly, itchy or raised patches; patches may be redder on outside edges or resemble a ring
Trichophyton rubrum and Trichophyton interdigitale cause athlete's foot (tinea pedis), toenail fungal infections (a.k.a. tinea unguium, a.k.a. onychomycosis), crotch itch (a.k.a. tinea cruris), and ringworm (a misnomer, as there is no worm involved; it is also known as tinea corporis).
Tinea corporis (ringworm, tinea circinata, tinea glabrosa) Tinea corporis gladiatorum; Tinea cruris (crotch itch, eczema marginatum, gym itch, jock itch, ringworm of the groin) Tinea faciei; Tinea imbricata (tokelau) Tinea incognito; Tinea manuum; Tinea nigra (superficial phaeohyphomycosis, tinea nigra palmaris et plantaris)