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Phototherapy for Prurigo Nodularis: Our Experience and a Review of the Literature
A Arrieta1, A Jaka1, E Del Alcázar1
1Servicio de Dermatología, Hospital Universitari Germans Trias i Pujol, Universitat Autònoma de Barcelona, Badalona, Barcelona, España.
Background And Objective:
Prurigo nodularis is a chronic inflammatory skin disease characterized by highly pruritic nodular lesions that cause constant itching and scratching and significant quality-of-life impairment. It has been described in a range of conditions, including skin diseases (mainly atopic dermatitis) and metabolic, neurological, and psychiatric disorders. The pathophysiological mechanisms are largely unknown. Various modalities of phototherapy have been described as appropriate and safe treatments for achieving clinical control and alleviating symptoms. In this article, we describe our experience with phototherapy in patients with prurigo nodularis.
Material And Methods:
Retrospective observational study of patients who received their first cycle of phototherapy to treat prurigo nodularis between March 2011 and October 2019. Information was collected on epidemiological and clinical characteristics, concomitant treatments, type and duration of phototherapy, maximum dose reached, and response to treatment.
Results:
We studied 44 patients (30 women and 14 men) with a median age of 65.5years. The most common form of phototherapy used was narrowband UV-B phototherapy (34 cycles, 77.27%) followed by a combination of UV-B and UV-A phototherapy (8 cycles). Response to treatment was considered satisfactory (clearance rate of ≥75%) in 24 patients (55.4%).
Conclusions:
Phototherapy is a suitable treatment for prurigo nodularis in a considerable proportion of patients. It can be used as monotherapy or combined with other treatments.
