[Psoriasis pustulosa generalisata--classification, clinical aspects and therapy. Review and experiences with 18 patients].

On the basis of clinico-morphological criteria we suggest the following classification of various pustular forms of psoriasis into four subtypes: generalized pustular psoriasis (von Zumbusch) and its atypical forms, erythema anulare centrifugum-like psoriasis with and without pustulation (EACP); psoriasis vulgaris with pustulation; palmo-plantar pustular psoriasis (Königsbeck-Barber) and its acral variant; acrodermatitis continua suppurativa (Hallopeau), and transitional forms. This classification takes into consideration both clinical aspects and response to treatment, and allows a prognosis of the various types of pustular psoriasis. Owing to its mild course and good treatment results, EACP represents a special form of psoriasis pustulosa generalisata. In our group of patients, systemic glucocorticosteroid therapy has proved deleterious, whereas oral photochemotherapy and etretinate have been found to be highly effective modes of therapy with only mild side effects and have been able to induce even permanent remission in EACP.