Polymyalgia rheumatica (sometimes referred to as PMR) is a common cause of widespread aching and stiffness in older adults. Because PMR does not often cause swollen joints, it may be hard to recognize. PMR may occur with another health problem, giant cell arteritis.
PMR affects adults over the age of 50.
Aching and stiffness in PMR affect the upper arms, neck, buttocks and thighs, and are most severe in the morning.
These symptoms respond quickly and completely to low doses of corticosteroids.