Some myopathies, especially when they’re present from birth, have life-threatening complications. But, with time and physical therapy, some people born with myopathies can gain muscle strength. Others often can manage their symptoms through medication, lifestyle modifications, or use of orthopedic and respiratory equipment.
Myopathies aren’t caused by overexertion. However, exercise can aggravate some of the myopathies, because of mutations that change the way muscles respond to activity.