Phototesting and photoprotection in LE

Photosensitivity and induction of skin lesions following UV
radiation is a common problem of patients with cutaneous and
systemic forms of lupus erythematosus. The detrimental effect of UV
radiation to patients with lupus erythematosus was already
recognized in the last century. Skin lesions can now be provoked
under standardized conditions allowing the diagnosis and
classification of patients with photosensitive disorders. The aim
of this review is to give an overview on the history, test
procedure and test results in patients with lupus erythematosus.