Polymyalgia Rheumatica (PMR) is an inflammatory disorder affecting the elderly, first described in 1888 by Dr. William G. Macfarlane. It primarily causes muscle pain and stiffness, often alongside giant cell arteritis. With an estimated prevalence of 5-10 cases per 1,000 people over 50, PMR remains a significant concern in rheumatology. How well do you really know this complex condition?