Abstract
A follow-up study of a 10-year clinical material of 272 cases of pustulosis palmaris et plantaris is pre sented. The incidence of ovcrt psoriasis was 6. I% and as high as 24.4 % if probablc cases of psoriasis were also included. The study was made via a self-administred questionnaire giving a healing frequence of 30 % both when calculated 5 and 10 years after the onset. Relapses were stated by 18% of those who at the time of this study still bad pusLular complaints. The tendency to relapse was the same in the first as in the second 5 year period after cure. A re-examination was made of 82 cases representative of those with remaining complaints. 0(th:isc, only 50% had pustular lesions and the other different kinds of erythema and keratoses, thus giving a somewhat brighter prognostic outlook. No difference was found, however, as regards onset of the pustular lesions, the tendency of healing and relapse in patients with and without psoriasis. Thcre is a possibility of increased susceptibility to infectious diseascs and some eviclence for correlations between pusttllosis palmaris et plamaris and psoriasis and rheumatic disordcrs. These findings are in agreemcnt wi1h the opinion that pustulosis palmaris et plantaris represents an alteration o{ the. normal immuno• logical response.

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