[Postulosis palmoplantaris caused by angiotensin-converting enzyme inhibitors].

Angiotensin-converting enzyme (ACE) is identical to kinase II, which inactivates bradykinin. Inhibition of bradykinin degradation by ACE inhibitors alters the kinin-kallikrein arachidonic acid system leading to increased concentrations of inflammatory metabolites. It has previously been demonstrated that the arachidonic acid system may play a role in the pathogenesis of psoriasis/volar pustulosis. Our patient was treated with Captopril and developed a rash identical to volar pustulosis within six weeks. Captopril was substituted with Perindopril, and the eruptions had almost disappeared five months later after a short systemic treatment with steroids. One month later the patient developed the same rash. Perindopril was withdrawn and the eruptions had disappeared two months later.