title: Multiple lichen planus-like keratoses: Lichenoid drug eruption simulant and under-recognised cause of pruritic eruptions in the elderly.
abstract: We present six cases of multiple eruptive lichen planus-like keratoses (LPLK), occurring in older individuals predominately confined to previously solar exposed areas. Diagnosis was often confounded by the frequent histological reporting of 'lichenoid drug reaction' (LDR), despite many of the patients being unmedicated. We review the literature regarding eruptive LPLK and reflect on their etiology, clinical aspects, management and importantly their clinicopathological differentiation from LDR.
authors.affiliation: RMO, Nambour Hospital, Nambour, Queensland, Australia.
authors.forename: Lucy
authors.initials: L
authors.lastname: Pitney
authors.affiliation: Sullivan Nicolaides Patholology, Brisbane, Queensland, Australia.
authors.forename: David
authors.initials: D
authors.lastname: Weedon
authors.affiliation: Sherwood Road Dermatology, Brisbane, Queensland, Australia.
authors.forename: Michael
authors.initials: M
authors.lastname: Pitney
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D003875:Drug Eruptions / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007642:Keratosis / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D017512:Lichenoid Eruptions / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011537:Pruritus / Q000209:etiology
keywords: acitretin; lichen planus; lichen planus-like keratosis; lichenoid drug reaction; lichenoid keratosis; photoaggravation; pruritus