# Effect of UV-A1 Phototherapy Treatment on Scleroderma: A Systematic Review

## TL;DR

This paper reviews how UV-A1 phototherapy can improve symptoms of scleroderma, a skin and autoimmune disease, offering a safer alternative to traditional treatments.

## Contribution

The study systematically evaluates UV-A1 phototherapy as a novel treatment option for scleroderma with fewer side effects.

## Key findings

- UV-A1 phototherapy improved skin elasticity and reduced skin thickness in sclerotic areas.
- Patients experienced better mobility and reduced collagen bundle size after treatment.
- UV-A1 phototherapy showed potential as a non-invasive treatment for scleroderma.

## Abstract

Scleroderma is an autoimmune disease characterized by thickened and hardened skin, Raynaud’s phenomenon, calcinosis, telangiectasias, joint and muscle problems, as well as respiratory, cardiac, renal, and gastrointestinal disturbances. Scleroderma can be classified as either localized or systemic. Localized scleroderma refers to sclerosis of isolated areas of the body confined to the skin and subcutaneous layer, but it does not involve the distal extremities. However, an exception to this in some cases is morphea, which may progress to organs. In comparison, systemic scleroderma affects both cutaneous and visceral organs. Diagnosis of the condition is made by clinical presentation, medical history, and diagnostic tests. Current treatment options for scleroderma include cyclophosphamide, methotrexate, azathioprine, mycophenolate mofetil, and hematopoietic stem cell transplant. However, immunosuppressive agents used to treat scleroderma are associated with adverse effects. An unmet need exists for alternative therapies that are tied to a lower risk of adverse events. Ultraviolet (UV)-A1 phototherapy has increasingly been analyzed for use within autoimmune conditions as both a potential first-line or adjuvant treatment option. As such, we conducted a systematic literature review of a total of 293 articles using Ovid, Web of Science, and Cumulative Index to Nursing and Allied Health Literature (CINAHL). Based on our inclusion and exclusion criteria, we included 11 articles in this review, which consisted of a total of 166 patients, the majority being female at 140 (84.3%) patients and only 26 males (15.7%). Overall, patients who received UV-A1 phototherapy saw beneficial effects, including improvements in skin elasticity, mobility of extremities, reduction of skin thickness within sclerotic areas, ulcer improvement, skin softening, reduction of skin tightness, and reduction in collagen bundle size and thickness. UV-A1 phototherapy has the potential to become an integral component of scleroderma management, offering a non-invasive and effective option for patients.