Bird criteria

Bird criteria

(berd),
criteria defined by Bird and coworkers (1979) for the diagnosis of polymyalgia rheumatica (PMR), an inflammatory condition of unknown etiology. Criteria include bilateral shoulder pain and/or stiffness; onset of illness within previous 2 weeks; initial erythrocyte sedimentation rate exceeding 40 mm/hour; morning stiffness duration s exceeding 1 hour; patient older than 65 years; depression, and/or loss of weight; bilateral upper arm tenderness. A diagnosis of probable PMR is made if any three (or more) of these criteria or findings are fulfilled. The presence of three or more criteria yields a sensitivity of 92% and a specificity of 80%.