詳しくは ― 日本人

Pustular psoriasis は、免疫系の異常によって引き起こされるまれな皮膚疾患です。赤い斑点の上に黄色がかった膿疱（にきびのようなもの）が現れ、症状の出方は人それぞれです。通常の乾癬と関連しますが、独自の特徴があります。膿疱は広がることもあれば、1つの部位にとどまることもあり、通常は多数の白血球を含みます。乾燥した鱗屑を伴う一般的な乾癬とは異なり、膿疱性乾癬は触れると痛みを感じやすいのが特徴です。
Pustular psoriasis is a rare, immune-mediated systemic skin disorder characterized by yellowish pustules on an erythematous base with a variety of clinical presentations and distribution patterns. Pustular psoriasis is considered a variant of psoriasis vulgaris. The pustules can be widespread or localized and are characterized by a sterile predominantly neutrophilic infiltrate. Unlike chronic plaque psoriasis (the most common variant of psoriasis vulgaris), lesions of pustular psoriasis are often tender to palpation.

Pustular psoriasis は、まれで重篤なタイプの乾癬です。さまざまなパターンで無菌性膿疱が発生するのが特徴です。この病気の特徴は多岐にわたります。汎発性膿疱性乾癬は、発症時期、誘因、重症度、進行の点で大きく異なります。
Pustular psoriasis is a rare and extreme form of psoriasis characterized by the appearance of sterile pustules which can take many patterns. All the main pathological features of the disease are accentuated. Generalized pustular psoriasis is clinically heterogeneous in its age at onset, precipitants, severity, and natural history. Many overlapping clinical entities are recognized. There is a relationship between these entities and plaque psoriasis, as some individuals may have episodes of plaque psoriasis preceding or following the generalized pustular psoriasis, but in others generalized pustular psoriasis occurs as the sole phenotype without plaque psoriasis at any time.