title: Groove sign.
authors.affiliation: Internal Medicine Department, Hospital Universitario Gregorio Marañón, Madrid, Spain. Electronic address: pbdemelo@hotmail.com.
authors.forename: Pablo
authors.initials: P
authors.lastname: Demelo-Rodríguez
authors.affiliation: Autoimmune Diseases Unit, Hospital Universitario San Cecilio, Granada, Spain.
authors.forename: Norberto
authors.initials: N
authors.lastname: Ortego-Centeno
authors.affiliation: Autoimmune Diseases Unit, Hospital Universitario San Cecilio, Granada, Spain.
authors.forename: Jose Luis
authors.initials: JL
authors.lastname: Callejas-Rubio
mesh_terms: D000368:Aged; D001799:Blood Sedimentation; D002097:C-Reactive Protein / Q000276:immunology; D004802:Eosinophilia / Q000175:diagnosis* / Q000276:immunology; D005208:Fasciitis / Q000175:diagnosis* / Q000276:immunology; D005542:Forearm; D006801:Humans; D008297:Male
chemical_list: D002097:C-Reactive Protein