Inclusion body myositis (IBM) is a rare inflammatory muscle disease that primarily affects older adults. It leads to progressive muscle weakness and wasting, particularly in the arms and legs. Symptoms often include difficulty climbing stairs, lifting objects, and performing everyday tasks. The exact cause of IBM is not fully understood, but it is believed to involve both autoimmune and degenerative processes. Diagnosis typically involves a combination of clinical evaluation, blood tests, and muscle biopsy. Treatment options are limited and may include physical therapy and medications to manage symptoms. Unlike some other muscle disorders, IBM does not respond well to corticosteroids or immunosuppressive therapies.