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Malassezia folliculitis or pityrosporum folliculitis, [1] is a skin condition caused by infection by Malassezia (formerly Pityrosporum) yeast. [2]: 314 The skin of the upper trunk area including the back, chest, arms and sometimes the neck is often affected and this condition is often seen in young to middle aged adults, although it has been known to occur in adults well into their sixties ...
Malassezia is a genus of fungi (specifically, a yeast). Some species of Malassezia are found on the skin of animals, including humans. Because malassezia requires fat to grow, [3] it is most common in areas with many sebaceous glands—on the scalp, [4] face, and upper part of the body.
Malassezia furfur is a fungus that lives on the superficial layers of the dermis.It generally exists as a commensal organism forming a natural part of the human skin microbiota, but it can gain pathogenic capabilities when morphing from a yeast to a hyphal form during its life cycle, through unknown molecular changes. [2]
Ringworm. What it looks like: Ringworm is a common skin infection caused by a fungus. It gets its name from its circular rash, which is often red, swollen, and cracked. Other symptoms to note ...
Piedraia hortae is a dermatophyte and causes a superficial fungal infection known as black piedra, which causes the formation of black nodules on the hair shaft and leads to progressive weakening of the hair. [3] The infection usually infects hairs on the scalp and beard, but other varieties tend to grow on pubic hairs.
Tinea versicolor (also pityriasis versicolor) is a condition characterized by a skin eruption on the trunk and proximal extremities. [1] The majority of tinea versicolor is caused by the fungus Malassezia globosa, although Malassezia furfur is responsible for a small number of cases.
Black yeasts, sometimes also black fungi, dematiaceous fungi, microcolonial fungi or meristematic fungi [1] is a diverse group of slow-growing microfungi which reproduce mostly asexually (fungi imperfecti). Only few genera reproduce by budding cells, while in others hyphal or meristematic (isodiametric) reproduction is preponderant.
Malassezia pachydermatis is a zoophilic yeast in the division Basidiomycota.It was first isolated in 1925 by Fred Weidman, and it was named pachydermatis (Greek for 'thick-skin') after the original sample taken from an Indian rhinoceros (Rhinocerosus unicornis) with severe exfoliative dermatitis. [2]