Muscle disorders, also known as myopathy, can create difficulty for those dealing with certain muscular diseases.

• Injury or overuse, such as sprains or strains, cramps or tendinitis
• Inflammatory myopathy includes the illnesses polymyositis, dermatomyositis, inclusion body myositis, overlap myositis, and necrotizing autoimmune myopathy.
• A genetic disorder, such as muscular dystrophy, storage myopathies, mitochondrial diseases, periodic paralysis and congenital myopathies
• Fibromyalgia
• Metabolic and Endocrine myopathy- Hypothyroidism, hyperthyroidism, hyperparathyroidism and hypoparathyroidism
• Infections- influenza, coxsackievirus, and Lyme disease
• Drug Induced - statin drugs, hydroxychloroquine (Plaquenil), colchicine, and steroids.

• Weakness and Fatigue: muscle weakness tends to be progressive and involves muscles located near the hip or shoulder
• Trouble Moving: difficulty moving, such as walking, running, climbing stairs, or attempting to stand from a seated position
• Trouble with Shoulder Muscles: difficulty in using shoulder muscles, such as lifting or carrying heavy loads, reaching above the head, or holding heavy items
• Muscle Atrophy: shrinking muscle mass
• Pain: defects in blood circulation, injury, or inflammation may cause pain in the muscles

• CPK
• Electromyography (EMG)
• MRI of the Musculoskeletal System
• Needle Biopsy

Treatment mainly depends on underlying etiology. Most of the genetic disorders have no specific treatment while inflammatory muscle disease responds well to immunomodulatory treatment.