Light therapy | |
---|---|
![]() Example of light therapy for winter depression | |
ICD-10-PCS | 6A6, GZJ |
ICD-9 | 99.83, 99.88 |
MeSH | D010789 |
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. Treating skin conditions such as neurodermatitis, psoriasis, acne vulgaris, and eczema with ultraviolet light is called ultraviolet light therapy.