Journal
PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE
Volume 18, Issue 4, Pages 202-207Publisher
BLACKWELL MUNKSGAARD
DOI: 10.1034/j.1600-0781.2002.00760.x
Keywords
photoonycholysis; porphyrias; pseudoporphyria
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Background/Purpose: Photoonycholysis may be seen as a part of Segal's triad, photosensitivity followed by discoloration of the nails and onycholysis. But the latter may also appear, independently, in the absence of photosensitive reaction elsewhere. Methods: Photoonycholysis may result from drug intake, porphyria cutanea tarda, erythropoietic porphyria, erythropoietic protoporphyria, variegate porphyria and pseudoporphyria. Rarely, spontaneous photoonycholysis may be observed. Results: Four distinct subtypes have been recorded without relationship between the responsible drugs and the different clinical varieties of photoonycholysis. Primary photohemorrhage can occur; it can also be associated with polydactylous photoonycholysis type III. Conclusion: The inability to reproduce photoonycholysis experimentally should be emphasized.
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