What is ultraviolet (UV) phototherapy ?
Ultraviolet phototherapy is the use of specific wavelengths of the sun’s natural spectrum for the treatment of skin disorders such as psoriasis, vitiligo and atopic dermatitis (eczema). Phototherapy devices use either the short wavelength Ultraviolet-B (UVB) rays or the longer rays of Ultraviolet-A (UVA). UVB light produces biological reactions within the skin that lead to clearing of the lesions. UVB is also the waveband of light that produces Vitamin-D in our skin; essential to good health.