title: Frictional amyloidosis: a study of 10 cases.
abstract: Ten patients with macular amyloidosis were studied with particular reference to the role of friction. All 10 patients had a history of prolonged rubbing over a period of 2-5 years with various objects, such as bath sponges, brushes, towels, plant sticks and leaves. The presence of amyloid was confirmed by histochemical stains in six cases and by electron microscopy in four cases. The study confirms the role of friction in the causation of macular amyloidosis and hence, the term 'frictional amyloidosis' aptly describes the condition. The study also emphasizes the need for electron microscopy in the diagnosis of frictional amyloidosis.
authors.affiliation: Department of Dermatology and Genito Urinary Medicine, Al Nahdha Hospital and Baushar Polyclinic, Sultan Qaboos University, Muscat, Sultanate of Oman. venkatm@batelo.com.bh
authors.forename: M N
authors.initials: MN
authors.lastname: Venkataram
authors.forename: S R
authors.initials: SR
authors.lastname: Bhushnurmath
authors.forename: D E
authors.initials: DE
authors.lastname: Muirhead
authors.forename: A R
authors.initials: AR
authors.lastname: Al-Suwaid
mesh_terms: D000328:Adult; D000686:Amyloidosis / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D017276:Friction; D006801:Humans; D017495:Hyperpigmentation / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009850:Oman