title: A papule with bluish ring on the chest.
authors.affiliation: Department of Dermatology, Heart of England NHS Foundation Trust, Solihull, UK. bavaniarun@hotmail.com
authors.forename: B
authors.initials: B
authors.lastname: Arun
authors.forename: P
authors.initials: P
authors.lastname: Colloby
authors.forename: A
authors.initials: A
authors.lastname: Loffeld
mesh_terms: D003560:Cysts / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006201:Hair Diseases / Q000175:diagnosis*; D018859:Hair Follicle / Q000473:pathology*; D006801:Humans; D017495:Hyperpigmentation / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged