Inclusion body myositis (IBM) is a rare, progressive muscle disease characterized by chronic muscle inflammation and weakness. It is estimated that approximately 20,000 people in the United States (US) have IBM, though the exact prevalence is unknown. IBM usually develops after age 50 and is more likely to affect men than women. The disease progresses . . .
Myopathy is a disease condition where muscle fibers do not function properly, resulting in muscular weakness. Inclusion-body myositis (IBM) is a type of inflammatory myopathy that is characterized by inflammation, weakness, and atrophy of the skeletal muscle. IBM develops in adulthood, usually after age 50. The symptoms and rate of progression vary from person to . . .