脓癣通常是由嗜动物真菌，如石膏样小孢子菌或羊毛样小孢子菌感染所引起的。其原因主要是人类对此类癣菌的反应较强烈，引起明显反应。
很多文献报道，灰黄霉素治疗脓癣仍是首选药物，但由于该药的肝脏毒性大，因此目前较少应用于儿童脓癣的治疗。
There are many reports that griseofulvin is the first choice for kerion, but it can hardly be used in children for its hepatic toxicity.
也有人认为是脓疱性牛皮癣的一个亚型，但也有不同意见。
It was also considered to be a subtype of pustular psoriasis, but there are different opinions.
此类型在临床上比较少见，往常把它分为泛发型脓疱型牛皮癣及掌跖脓疱型牛皮癣两种。
This type is relatively rare in clinical practice, always put it into generalized pustular psoriasis and two kinds of palmoplantar pustular psoriasis.
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