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Pityrosporum folliculitis : ウィキペディア英語版
Pityrosporum folliculitis
Pityrosporum folliculitis or Malassezia folliculitis is a skin condition caused by infection by pityrosporum yeast.
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, and can also be found on the lower extremities as well. Its diagnosis is based on the pruritic (itchy) papulopustules found in a follicular pattern in these regions.
Although pustules form from an overgrowth of the yeast, ''Malessezia furfur'', plugging the follicles. ''M furfur'' is lipophilic, requiring fatty acids like what is present in oily skin to proliferate. It has been shown that pityrosporum yeast grows by consuming fatty acids with carbon chain lengths C11 to C24.
Pityrosporum is part of the normal skin flora, but overgrows in certain conditions.〔 Overgrowth is associated with oily skin, humidity or other pre-existing dermatologic conditions such as seborrheic dermatitis and severe dandruff.〔(【引用サイトリンク】 title=Dermatologic Disease Database: Pityrosporum Folliculitis )
== See also ==

* Skin lesion
* List of cutaneous conditions

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「Pityrosporum folliculitis」の詳細全文を読む



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