Recurrent painful hand crisis in a four-year-old girl, revealing an erythropoietic protoporphyria.

Erythropoietic protoporphyria was first described in detail by Magnus [1] and Langhof [2] in 1961. An early diagnosis remains difficult to establish since the beginning is often insidious, with only subjective signs before skin lesions appear. We report a new case, that illustrates very well the discrepancy between the functional discomfort due to photosensitivity and the lack of cutaneous lesions. Case report [...]