Here is another source you can look into as well. The sources I give you care more about humanity than kick backs from Big Pharma. Eczema, atopic dermatitis, is a common skin disease that usually arises in childhood, runs a relapsing and remitting course, frequently persists into adult life, and can result in significant discomfort.
Emollients and topical steroids form the basis of treatment, but response is often incomplete. Patients with atopic eczema often report improvement after sun exposure, and results from a series of studies suggest that ultraviolet B (UVB; wavelength 280-315 nm), ultraviolet A (UVA; 315-400 nm), and combined UVA-UVB are effective treatments.

Narrow-band ultraviolet B (UVB) is frequently used for psoriasis, and open studies suggest that this phototherapy might improve atopic eczema.

http://articles.mercola.com/sites/articles/archive/2001/07/07/eczema-part-one.aspx