Prurigo nodularis (PN) is a chronic pruritic dermatosis of unknown etiology, characterized by firm, symmetrically localized hyperkeratotic pruritic papules and nodules. 结节性痒疹为一病因未明的慢性瘙痒性发疹性皮肤病。其特点为突出于皮面的角化过度的丘疹、结节,剧烈瘙痒,呈对称性分布。
We recently encountered three old men with pruritic porokeratosis .We propose the term “eruptive pruritic papular porokeratosis” for describing this unusual variant of porokeratosis. 笔者近期诊断三例这样的病患并推荐使用“发疹性瘙痒性丘疹型汗管角化症”来命名这一特殊类型的汗孔角化症。