Polymyalgia rheumatica vs late-onset rheumatoid arthritis

Abstract
Polymyalgia rheumatica (PMR) is a well-defined acute musculoskeletal inflammation of ageing people and characterized by clinical symptoms that may create some difficulties in the differential diagnosis with late (elderly) onset RA (LO-RA or EO-RA, respectively) as well as with LO-RA with PMR-like onset (LO-RA/PMR) [1].