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Tinea nigra. Tinea nigra, also known as superficial phaeohyphomycosis and Tinea nigra palmaris et plantaris, [2] is a superficial fungal infection, a type of phaeohyphomycosis rather than a tinea, that causes usually a single 1–5 cm dark brown-black, non-scaly, flat, painless patch on the palms of the hands and the soles of the feet of ...
Dermatophytosis. Dermatophytosis, also known as tinea and ringworm, is a fungal infection of the skin [2] (a dermatomycosis), that may affect skin, hair, and nails. [1] Typically it results in a red, itchy, scaly, circular rash. [1] Hair loss may occur in the area affected. [1] Symptoms begin four to fourteen days after exposure. [1]
Tinea is often called "ringworm" because the rash is circular, with a ring-like appearance. It is sometimes equated with dermatophytosis, and, while most conditions identified as "tinea" are members of the imperfect fungi that make up the dermatophytes, conditions such as tinea nigra and tinea versicolor are not caused by dermatophytes.
Topical antifungaldrugs are used to treat fungal infections on the skin, scalp, nails, vagina or inside the mouth. These medications come as creams, gels, lotions, ointments, powders, shampoos, tinctures and sprays. Most antifungal drugs induce fungal cell death by destroying the cell wall of the fungus. These drugs inhibit the production of ...
Acanthosis nigricans. Acanthosis nigricans is a medical sign characterised by brown-to-black, poorly defined, velvety hyperpigmentation of the skin. [1] It is usually found in body folds, [2] such as the posterior and lateral folds of the neck, the armpits, groin, navel, forehead and other areas. [1]
Chromoblastomycosis. Chromoblastomycosis is a long-term fungal infection of the skin [2] and subcutaneous tissue (a chronic subcutaneous mycosis). [3] It can be caused by many different types of fungi which become implanted under the skin, often by thorns or splinters. [4] Chromoblastomycosis spreads very slowly. [citation needed]
H. werneckii causes a rare superficial and non-invasive skin infection tinea nigra. [10] The typical symptoms are non-scaly, smooth, brown-black painless spots on the palms of hands and soles of feet. The growth of H. werneckii in liquid media is often yeast-like, although it can switch to filamentous growth. The mechanism of the switch is not ...
These fungal infections impair superficial layers of the skin, hair and nails. A dermatomycosis is a skin disease caused by a fungus. [1] The most frequent form is dermatophytosis (ringworm, tinea). Another example is cutaneous candidiasis. These fungal infections impair superficial layers of the skin, hair and nails.