[Pityriasis lichenoides chronica--a new indication for PUVA therapy? (author's transl)].

2 patients with long-standing and wide-spread pityriasis lichenoides chronica were treated with orally administered 8-methyoxypsoralen and UVA irradiation (PUVA therapy). After 15--21 PUVA treatments the patients were completely cleared. 3 and 4 weeks after the initial PUVA treatment, phase recurrences occurred in both patients. In 1 patient the lesions appeared clinically and histologically as pityriasis lichenoides et varioliformis acuta.