definitionRare condition arising on the scalp as one or more patches of tightly curled hair that are different in colour, shape, and consistency from the normal surrounding scalp hair. Electron microscopy shows the absence of cuticle; trichorrhexis nodosa is present. In more than 50 per cent of cases a pigmented or epidermal naevus has been present, but not in the same site. |
synonymsWoolly Hair Nevus |
UMLSWoolly hair naevus, Wooly hair nevus |
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