The symptoms of a<unk>  can be easily confused with the symptoms of another disease. In most cases, a Muscle biopsy is necessary for an accurate diagnosis of the cause of muscle weakness. A blood test can be done under normal circumstances to test for genetic differences and signs of tissue breakdown, or with an added cardio portion that can indicate if muscle breakdown is occurring. An electromyography is sometimes taken in order to rule out other disorders if the cause of fatigue is unknown. Differentiating between different types of<unk> es can be difficult due to the similar symptoms of each type such as Myoglobinuria and exercise intolerance. It has to be determined whether the patient has fixed or exercise induced manifestations, and if exercise related what kind of exercise, before extensive exercise related lab testing is done to determine the underlying cause.
Metabolic myopathy
Inflammatory myopathy
Nemaline myopathy
Brody myopathy
Acquired non-inflammatory myopathy
Centronuclear myopathy
Polymyositis
Hereditary inclusion body myopathy