Understanding Narrowband UVB Phototherapy

Type:Uv phototherapy   Time:2015-12-23 10:06:40

"Narrowband" UVB (UVB-NB) has become the phototherapy treatment of choice for psoriasis, vitiligo, atopic dermatitis (eczema) and other photoresponsive skin disorders. Understanding the benefits of "Narrowband" UVB versus conventional "Broadband" UVB phototherapy requires an understanding of light and the processes it affects.

 

The spectrum of optical radiation (light) is made up of different wavelengths of "light" ranging from 100 nanometers (nm) in the ultraviolet (UV) range to 1 millimeter (mm) in the infrared (IR) range. Visible light spans from about 380nm (violet) to 780nm (red) and are the "colors" that we see with our eyes. Ultraviolet is invisible and ranges from 380nm down to 100nm, and is further subdivided into UVA (315-380nm), UVB (280-315nm) and UVC (100-280nm).