Many people live with cardiomyopathy without any symptoms. Sometimes, people learn they have cardiomyopathy by accident. Testing for another health problem, such as a chest x-ray, may reveal an enlarged heart. Too often, people may dismiss symptoms they think are mild or not worth mentioning to a doctor. But seek prompt medical care if you experience shortness of breath, fatigue, irregular heartbeats, chest pain, fainting, or swelling in your ankles and feet that spreads to your legs, abdomen or neck. Because cardiomyopathy can run in families, close family members (parents, siblings and children) should be screened if the condition is diagnosed in a family member.