LCV patients, who had long term history
of active disease (more than 6 months) and
resistant to conventional therapy.6 Photochemo-
therapy (PUVA) is a combination of
psoralen (P) and long-wave ultraviolet radiation
(UVA).8-9 There were studies used PUVA to
treat pityriasis lichenoides et varioliformis
acuta,10 livedo reticularis and livedoid vasculitis,
11-13 pityriasis lichenoides14 and lymphomatoid
papulosis.15 In all of these conditions, there
were evidence of LCV in histopathological findings
and had good result with PUVA treatment.