What Are the Signs and Symptoms of Cardiomyopathy?

Some people with cardiomyopathy never have symptoms, and others have no symptoms in the early stages of the disease. As cardiomyopathy progresses and the heart weakens, signs and symptoms of heart failure usually appear. These signs and symptoms include:

• Tiredness
• Weakness
• Shortness of breath after exercise or even at rest
• Swelling of the abdomen, legs, ankles, and feet

Other signs and symptoms can include dizziness, lightheadedness, fainting during exercise, abnormal heart rhythms (arrhythmias), and an extra or unusual sound heard during the heartbeat (heart murmur).