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- may be congenital or acquired
- share a histopathological feature
- a 'cornoid lamella' (thin column of parakeratotic cells) evidenct clinically
as fine scaling around the periphery of the lesion
- mild atrophy occurs
in the centre of the lesion
- congenital lesions - reticulate pattern and
may be extensive
- aquired lesions - may be solitary and broad or multiple
and scattered (disseminated superficial actinic porokeratosis - sunlight is believed
to have an aetiological role)
- (1) Smith LC et
al. A guide to annular eruptions. Dermatology in Practice (April 2008); 16(1).
Last reviewed 01/2018