title: A controlled trial of photochemotherapy for persistent palmoplantar pustulosis.
abstract: Twenty-two patients with bilaterally symmetrical persistent palmoplantar pustulosis were treated on one randomly selected side with oral psoralen and long-wave ultraviolet light. The treated side cleared completely in twelve patients, almost cleared in five patients and improved in four. One patient improved on both sides. Fifteen of the twenty-two patients were then treated with topical psoralen and long-wave ultraviolet light on the side that had previously been used as a control. Similar results were obtained. Seven patients cleared completely, six patients were much improved and two were improved. These results are significantly different from those liable to occur by chance (P < 0.001).
mesh_terms: D000284:Administration, Oral; D000287:Administration, Topical; D002986:Clinical Trials as Topic; D005260:Female; D005533:Foot Dermatoses / Q000188:drug therapy*; D006229:Hand Dermatoses / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011701:PUVA Therapy; D010778:Photochemotherapy; D011897:Random Allocation