These diseases of the heart muscle can cause serious complications including heart failure, abnormal heart rhythms, heart valve problems and sudden cardiac arrest. These diseases enlarge the heart or make it thick and rigid.

Cardiomyopathy can lead to serious complications including heart failure, sudden cardiac arrest, arrhythmia and heart valve issues. People with cardiomyopathy may experience many symptoms including fatigue, chest pain and shortness of breath.

Cardiomyopathy is diagnosed using a variety of tests. These can include cardiac catheterization, echocardiography, stress testing and more.

Lifestyle changes and medication can help manage cardiomyopathy. Other treatments include implantable devices and surgery.