Medium-dose ultraviolet A1 therapy for pityriasis lichenoides et varioliformis acuta and pityriasis lichenoides chronica.
BACKGROUND
Ultraviolet A1 (340-400 nm) was found to be effective in the treatment of cutaneous T-cell-mediated diseases.


OBJECTIVE
The purpose of the present study was to assess the efficacy of UVA1 phototherapy for pityriasis lichenoides et varioliformis acuta (PLEVA) and pityriasis lichenoides chronica (PLC).


METHODS
Eight patients (3 with PLEVA and 5 with PLC) received 60 J/cm(2) UVA1 daily until remission. Four patients also had lesions inaccessible to UVA1 that were used as control lesions. Immunocytologic studies of skin infiltrates and circulating T cells were done.


RESULTS
Six patients showed complete clinical and histologic recovery. Two patients with PLC had a partial improvement. Unirradiated control lesions never improved. Serious short-term adverse effects were not encountered. No effects on circulating lymphocytes were reported.


CONCLUSIONS
UVA1 therapy is an effective and well-tolerated treatment for PLEVA and PLC. The therapeutic activity seems to be related to direct effects on cutaneous inflammatory infiltrates because the lesions in nonexposed cutaneous areas did not respond.
Department of Dermatology, Azienda Spedali Civili di Brescia, Brescia, Italy.
Piergiacomo Calzavara
PC
Pinton
Rossana
R
Capezzera
Cristina
C
Zane
Giuseppe
G
De Panfilis
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017514:Pityriasis Lichenoides / Q000473:pathology / Q000532:radiotherapy*; D014467:Ultraviolet Therapy / Q000379:methods*