👉 Cardiomyopathy is a medical condition in which abnormal muscle cells (myocytes) grow within the heart muscles, causing them to become weakened or inflamed. This can lead to more serious problems such as arrhythmias, which are irregular heartbeat patterns caused by an abnormal electrical signal traveling through the heart's walls. Cardiomyopathy usually begins during childhood and is often progressive in severity over time. Treatment for cardiomyopathy varies depending on the underlying cause of the condition.