light box

Light therapy—or phototherapy, classically referred to as heliotherapy—is a method recognized by scientific medicine for the treatment of various diseases. It includes exposure to outdoor daylight or specific indoor artificial light sources.
The care guideline for unipolar depression recommends light therapy especially for depression that follows a seasonal pattern (seasonal affective disorder). There is tentative evidence to support its use to treat depressive disorders that are not seasonally dependent. As a treatment for disorders of the skin, the second kind of light therapy, called ultraviolet light therapy, is meant to treat neurodermatitis, psoriasis, acne vulgaris, eczema and neonatal jaundice.

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