Annular lichenoid diseases

Unusual presentation of porokeratotic lichen planus: Histology, dermoscopy and confocal microscopy imaging of a rare condition

“…The differential diagnosis of pLP includes the annular and lichenoid dermatosis , from ALDY (Annular Lichenoid Dermatitis of Youth) to annular lichen planus and porokeratosis. 3 In 1941, Morgan and Dennie documented a presumed intraepithelial epithelioma ultimately diagnosed as “an unusual case of lichen planus”. 4 To the best of our knowledge this is the first report in literature that describe instead an unconventional presentation of pLP.…”