Aging

Osteoarthritis

Hemorrhagic shoulder effusions in the elderly (Milwaukee shoulder)

Destructive arthropathy

Tendinitis, bursitis

Tumoral calcinosis (sporadic cases)

Disease-associated

Hyperparathyroidism

Milk-alkali syndrome

Renal failure/long-term dialysis

Connective tissue diseases (e.g., systemic sclerosis, dermatomyositis, SLE)

Heterotopic calcification after neurologic catastrophes (e.g., stroke, spinal cord injury)

Heredity

Bursitis, arthritis

Tumoral calcinosis

Fibrodysplasia ossificans progressiva