What causes restrictive cardiomyopathy?
Restrictive cardiomyopathy is not usually inherited and its cause is often unknown. Known causes of restrictive cardiomyopathy may include: • Build-up of scar tissue (often for no known reason). • Build-up of abnormal proteins (amyloidosis) in the heart muscle. • Chemotherapy or chest exposure to radiation. • Excess iron (hemochromatosis) in the heart. • Other systemic diseases (sarcoidosis).
