title: Dermatofibroma and halo dermatitis.
abstract: The occurrence of a halo of dermatitis surrounding acquired naevi was initially reported by Meyerson in 1971 with histological features of focal spongiosis, parakeratosis, irregular acanthosis and a lymphocytic infiltrate in the upper dermis. When the same inflammatory reaction occurs around other lesions it is referred to as the Meyerson phenomenon or halo dermatitis. We report a rare case of the Meyerson phenomenon occurring around a dermatofibroma in a 69-year-old woman. This case highlights that the phenomenon may occur in a broad range of clinical scenarios and is not limited to acquired naevi in young adults.
authors.affiliation: Royal Hobart Hospital, Hobart, Tasmania, Australia. ccschofield@hotmail.com
authors.forename: Clare
authors.initials: C
authors.lastname: Schofield
authors.forename: David
authors.initials: D
authors.lastname: Weedon
authors.forename: Sandeep
authors.initials: S
authors.lastname: Kumar
mesh_terms: D000368:Aged; D003872:Dermatitis / Q000150:complications / Q000473:pathology*; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000150:complications / Q000473:pathology*; D006801:Humans; D012878:Skin Neoplasms / Q000150:complications / Q000473:pathology*