What are the major symptoms of dilated cardiomyopathy?

Cardiomyopathy: Symptoms vary depending upon the degree of heart failure. Some patients with a dilated cardiomyopathy may have minimal symptoms while heart function is preserved. Once heart function worsens patients may experience shortness of breath, palpitations (feeling like heart is racing or skipping beats), trouble lying flat, fatigue, passing out or nearly passing out, to name a few.

Heart failure: The major symptoms of dialted cardiomyopathy can include shortness of breath with exertion, shortness of breath layng down, swelling of the lower extremities, and high heart rate.