Abstract
Background
the current evidences attest UVA1 phototherapy as effective in the treatment of severe atopic dermatitis (AD). Furthermore in this indication, "medium dose" is as effective as "high dose" regimen. To date, a randomized comparison study evaluating the effectiveness as well as safety of different UVA1 protocols in different skin types in the treatment of adult patients with severe AD is still lacking.
Objective
The aim of the present study was to compare the safety and the efficacy of medium and high dose UVA1 either in fair or in dark skin types.
Methods
Twenty‐seven adult patients with severe AD were consecutively included in a randomized, controlled, open, two arms trial. Severity of AD was determined by means of SCORAD index and clinical improvement was also monitored. A total of 13/27 patients were treated with High Dose (130 J/cm2) UVA1 protocol while 14/27 patients received Medium Dose (60 J/cm2) UVA1 protocol. Phototherapy was performed 5 times weekly up to 3 weeks. Before and after UVA1 treatment each patient was evaluated for skin pigmentation through Melanin Index (MI) quantitative evaluation.
Results
Skin status improved in all patients resulting in a reduction of SCORAD index in all groups. Our results demonstrated that among patients with darker skin types and higher MI, High dose UVA1 was significantly more effective than Medium Dose (p < 0.0001) while within the groups with skin type II, no significant differences between high and medium dose protocols were observed.
Conclusion
Our study, confirms previous observations that UVA1 phototherapy should be considered among the first approaches in the treatment of patients with severe generalized atopic dermatitis and also demonstrates that in darker skin types, high dose UVA1 phototherapy is more effective than medium dose in the treatment of adult patients with severe AD.
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