title: Gravitational erythema.
abstract: We report an extremely unusual instance of macular erythema on the arms of a 15-year-old boy that occurs when the arms are in a dependent position. The eruption disappears promptly on elevation of the arms. The skin changes observed in our patient are similar to those previously described under the term gravitational erythema. It is suggested that the cutaneous lesions are secondary to an abnormal response to changes in venous pressure.
authors.affiliation: Department of Dermatology and Venereology, São Marcos Hospital, Braga, Portugal. dermato@hsmbraga.min-saude.pt
authors.forename: Teresa
authors.initials: T
authors.lastname: Pereira
authors.forename: Ana Paula
authors.initials: AP
authors.lastname: Vieira
authors.forename: José Carlos
authors.initials: JC
authors.lastname: Fernandes
authors.forename: A
authors.initials: A
authors.lastname: Sousa Basto
mesh_terms: D000293:Adolescent; D001132:Arm / Q000503:physiopathology*; D004890:Erythema / Q000503:physiopathology*; D006112:Gravitation; D006801:Humans; D008297:Male; D011187:Posture / Q000502:physiology*; D014690:Venous Pressure / Q000502:physiology