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Journal of the American Academy of Dermatology
Volume 38, n° 6
pages 945-949 (juin 1998)
Doi : 10.1016/S0190-9622(98)70157-4
accepted : 6 Mars 1998
Sparfloxacin-induced photosensitivity and the occurrence of a lichenoid tissue reaction after prolonged exposure

Hiroko Hamanaka, MD, Hitoshi Mizutani, MD, PhD, Masayuki Shimizu, MD, PhD
Department of Dermatology, Mie University, Faculty of Medicine. Tsu, Japan 


Background: A new antibacterial quinolone, sparfloxacin (SPFX), frequently causes photosensitive dermatitis and sometimes induces a treatment-resistant lichenoid tissue reaction (LTR). Objective: We attempted to determine the factors that induce LTR in SPFX-induced photodermatitis. Methods: Thirteen patients with SPFX photosensitive dermatitis were studied clinically and histopathologically. Results: Six of the 13 patients had acute dermatitis with epidermal spongiosis and focal epidermal HLA-DR and intercellular adhesion molecule–1 (ICAM-1) expression with CD4+ cell infiltration. The other seven displayed LTR with basal cell liquefaction degeneration and diffuse epidermal HLA-DR and ICAM-1 expression associated with CD8+ cells. The seven patients with LTR were exposed to UV and SPFX for more than 2 weeks after the appearance of their initial eruption, whereas the six patients with acute dermatitis were treated within 2 weeks. The acute dermatitis lesions cleared significantly within 2 weeks, but the LTR lesions persisted for more than 6 weeks. Conclusion: Patients with quinolone-induced photosensitivity should be treated within 2 weeks of onset to prevent LTR. (J Am Acad Dermatol 1998;38:945-9.)

The full text of this article is available in PDF format.

 Reprint requests: Hitoshi Mizutani, MD, PhD, Department of Dermatology, Mie University, Faculty of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan.
 0190-9622/98/$5.00 + 0   16/1/90032

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