What disease causes generalized muscle atrophy?

Generally, generalized muscle atrophy may be caused by conditions such as muscular dystrophy, polymyositis, progressive muscular atrophy, myotonic disorders, myasthenia gravis, and other diseases. If discomfort symptoms occur, it is recommended to seek timely medical attention at a hospital and receive standardized treatment under the guidance of a physician. Specific analyses are as follows:

1. Muscular Dystrophy

Muscular dystrophy is a genetic disorder primarily affecting skeletal muscles, which may also be associated with environmental and nutritional factors. This condition can lead to degeneration and necrosis of muscle fibers, which are gradually replaced by fat and connective tissue, resulting in generalized muscle atrophy. Patients may also experience joint pain and reduced muscle strength. Supportive therapies, such as improved nutrition and physical therapy, can be administered under medical supervision.

2. Polymyositis

Polymyositis is a diffuse inflammatory muscle disease possibly related to autoimmune, genetic, and microbial infection factors, characterized by symmetrical weakness in proximal limbs, neck, and pharyngeal muscles, muscle tenderness, and elevated serum enzyme levels. Inflammation damages muscle fibers, impairing their ability to contract and relax normally, leading to muscle atrophy over time. Patients may follow medical advice to use medications such as hydrocortisone sodium succinate for injection, azathioprine tablets, and prednisone acetate tablets to suppress inflammatory responses.

3. Progressive Muscular Atrophy

Progressive muscular atrophy is an autosomal recessive genetic disorder usually caused by gene mutations. These mutations affect the function and structural integrity of neurons, particularly motor neurons. Motor neurons transmit nerve signals from the brain to muscles, controlling muscle movement. When motor neurons are damaged, the muscles they innervate gradually lose neural regulation, leading to decreased muscle strength and atrophy. Common symptoms include muscle weakness, difficulty swallowing, and breathing difficulties. Under medical guidance, patients may use medications such as riluzole tablets, mecobalamin tablets, and vitamin B12 tablets to alleviate symptoms.

4. Myotonic Disorders

Myotonic disorders are mostly hereditary diseases caused by gene mutations. The mutations lead to abnormal structure and function of muscle fibers, impairing normal contraction and relaxation, eventually causing muscle atrophy over time. Symptoms may include muscle weakness and myalgia. Under medical supervision, medications such as phenytoin sodium tablets, carbamazepine tablets, and quinine sulfate tablets may be used to improve muscle stiffness symptoms.

5. Myasthenia Gravis

Myasthenia gravis may be associated with genetic, drug-related, immune, environmental, and infectious factors. It causes the immune system to abnormally attack acetylcholine receptors at the neuromuscular junction, disrupting nerve signal transmission. As nerve signals fail to effectively reach muscles, the muscles lose neural innervation and nutritional support, gradually leading to atrophy. Symptoms may include ptosis (drooping eyelids), difficulty swallowing, and respiratory distress. Under medical guidance, patients may receive treatments such as neostigmine methylsulfate injection, ifosfamide for injection, and methylprednisolone tablets.

Patients are advised to promptly visit a reputable medical institution for evaluation and receive appropriate examinations and treatment under professional medical supervision.