![]() While light therapy appears to provide short-term benefit, there is a lack of long-term outcome data or data in those with severe acne. There is moderate evidence for the efficacy of blue and blue-red light therapies in treating mild acne, but most studies are of low quality. Tanning beds, however, generate mostly UVA light, and only 4% to 10% of tanning-bed light is in the UVB spectrum.Īs of 2012 evidence for light therapy and lasers in the treatment of acne vulgaris was not sufficient to recommend them. Full body phototherapy can be delivered at a doctor's office or at home using a large high-power UVB booth. The most common treatment is with narrowband UVB, which has a wavelength of approximately 311–313 nanometers. The exposures can be to a small area of the skin or over the whole body surface, as in a tanning bed. Light therapy treatments for the skin usually involve exposure to ultraviolet light. ![]() Skin conditions High-intensity blue light (425 nm) used for the attempted treatment of acne Medical uses A baby in neonatal care under a blue-light (420–470 nm) phototherapy lamp wearing only a diaper, being treated for newborn jaundice ( hyperbilirubinemia) Nutrient deficiency Vitamin D deficiency Įxposure to light to wavelengths of 290-300 nanometers enables the body to produce vitamin D3 to treat vitamin D3 deficiency. Treating skin conditions such as neurodermatitis, psoriasis, acne vulgaris, and eczema with ultraviolet light is called ultraviolet light therapy. ![]() Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, and skin wound infections.
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