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Bath PUVA and saltwater baths followed by UV-B phototherapy as treatments for psoriasis: a randomized controlled trial
Type:Uv phototherapy Time:2015-05-11 10:38:35 AbstractOBJECTIVE:
To evaluate the efficacy of psoralens dissolved in a warm-water bath followed by exposure to UV-A irradiation (bath PUVA) or saltwater phototherapy (SW UV-B) compared with tap-water phototherapy (TW UV-B) or UV-B irradiation alone in psoriasis.
DESIGN:
Multisite, prospective, randomized, controlled trial with 4 parallel groups.
SETTING:
Total of 102 dermatologic outpatient clinics.
PATIENTS:
Total of 1241 patients with stable psoriasis vulgaris and a Psoriasis Area and Severity Index score of 7 or greater.
INTERVENTIONS:
Four-times-weekly UV-B, TW UV-B, SW UV-B, or bath-PUVA with baths preceding UV irradiation over a maximum of 8 weeks. The UV dose was adapted to erythemal response.
MAIN OUTCOME MEASURES:
Incidence of therapeutic success, defined as a reduction of the Psoriasis Area and Severity Index or affected body surface area of 50% or more.
RESULTS:
Patients who received TW UV-B had a significantly higher incidence of therapeutic success than did patients treated with UV-B alone (60.7% vs 43.3%; P<.001; number needed to treat, 5.8; 95% confidence interval [CI], 3.9-10.9). Patients who received SW UV-B or bath PUVA had a significantly higher incidence of therapeutic success than did patients treated with TW UV-B (74.9% vs 60.7%; P<.001; number needed to treat, 7.0; 95% CI, 4.6-14.9; and 78.4% vs 60.7%; P<.001; number needed to treat, 5.7; 95% CI, 4.0-9.7, respectively). Bath PUVA was not superior to SW UV-B (78.4% vs 74.9%; P = .34).
CONCLUSION:
Bath PUVA and SW UV-B are comparably effective treatments in psoriasis and superior to UV-B and TW UV-B.
Comment in
Balneophototherapy for psoriasis using saltwater baths and UV-B irradiation, revisited.
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