M60-M63: Disorders of muscles

Disorders of muscles, encompassed in the M60-M63 range by the ICD-10 classification, characterize a group of conditions that affect the skeletal muscles. These conditions typically involve muscle inflammation, degeneration, or dysfunction. Causes can vary widely, including physical strain, autoimmune disorders, genetic mutations, metabolic imbalances, or infections. They often present signs and symptoms like muscle weakness, pain, stiffness, and sometimes even noticeable muscle breakdown. Progression of these disorders can lead to a decline in muscle strength and physical function over time, and they can affect any skeletal muscle in the body. While certain conditions are localized to specific muscles or muscle groups, others might have a more widespread impact. Understanding the exact syndrome can help anticipate the progression and potential complications, which is why any change in muscle function should be evaluated by a health professional.