Erythropoietic protoporphyria (EPP) is an autosomal dominant condition characterized by marked skin photosensitivity.
Patients typically complain of a burning sensation on relatively brief exposure to sunlight. Urticarial or eczematous changes may appear later.
Punctate scars occur in areas of chronic sun exposure such as the malar skin.
Particularly a problem in childhood, the condition can persist through adulthood.
- Case reports show benefit from PUVA and UVB which increase tolerance to sunlight.