Tendinitis and bursitis.
Tendinitis is thought to arise from acute or chronic excessive use of a particular muscle group. Age-related changes at osseotendinous junctions may explain why tendinitis occurs most often after age 50. Bursitis often develops secondary to tendinitis. Local steroid injections are frequently palliative.
D002062:Bursitis / Q000150:complications / Q000503:physiopathology*; D006801:Humans; D052256:Tendinopathy / Q000150:complications / Q000503:physiopathology*