PUVA‐Induced Lichen Planus

A 28‐year‐old male with histologically proven psoriasis vulgaris was administered oral 8‐methoxypsoralen UVA therapy (PUVA). The plaques of psoriasis gradually responded to treatment, however numerous pruritic, violaceous papules over the right forearm and left thigh developed 5 months after startin...

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Bibliographic Details
Published in:Journal of dermatology 2003-02, Vol.30 (2), p.151-153
Main Authors: Nanda, Soni, Grover, Chander, Reddy, Belum Siva Nagi
Format: Article
Language:English
Subjects:
Adult
epitope spreading
Humans
lichen planus
Lichen Planus - etiology
Lichen Planus - pathology
Male
psoralen ultraviolet A therapy
Psoriasis - drug therapy
PUVA Therapy - adverse effects
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Summary:A 28‐year‐old male with histologically proven psoriasis vulgaris was administered oral 8‐methoxypsoralen UVA therapy (PUVA). The plaques of psoriasis gradually responded to treatment, however numerous pruritic, violaceous papules over the right forearm and left thigh developed 5 months after starting PUVA (45 sittings with a cumulative dose of 156 J/cm2). Histopathologic examination of these lesions was compatible with the diagnosis of lichen planus (LP). On stopping PUVA therapy, the lesions subsided in one month. This case emphasizes the hypothesis that cell injury caused by PUVA therapy could expose some sequestered antigens to autoreactive lymphocytes and induce lichen planus.
ISSN:0385-2407
1346-8138
DOI:10.1111/j.1346-8138.2003.tb00364.x