Cardiomyopathies have been defined as those myocardial disorders in which the heart muscle is abnormal structurally and functionally in the absence of coronary artery disease, hypertension, valvular diseases, and/or congenital heart defects that can explain the abnormal myocardium. Several categories are included in the cardiomyopathy spectrum such as dilated, hypertrophic, restrictive, and unclassified. This book shines a light on very specific types of cardiomyopathies, including metabolic disorders and hypertrophic and restrictive cardiomyopathy, as well as some miscellaneous types such as drug-induced cardiomyopathy. It also examines pediatric cardiomyopathy as well as the long-term effects of COVID-19 on the cardiovascular system.