Most common intrinsic cardiomyopathy. 2.Hyperophic cardiomyopathy 3.Restrictive cardiomyopathy Least common intrinsic cardiomyopathy. Primary Myocardial Involvement Idiopathic (D, R, H) Familial (D, R, H) Eosinophilic endomyocardial disease (R) Endomyocardial fibrosis (R) Secondary Myocardial Involvement Infective (D) Viral myocarditis Bacterial myocarditis Fungal myocarditis Protozoal myocarditis Metazoal myocarditis Spirochetal Rickettsial Metabolic (D) Familial storage disease (D, R) Glycogen storage disease Mucopolysaccharidoses Hemochromatosis Fabry's disease Deficiency (D) Electrolytes Nutritional Connective tissue disorders (D) Systemic lupus erythematosus Polyaeritis nodosa Rheumatoid ahritis Progressive systemic sclerosis Dermatomyositis Infiltrations and granulomas (R, D) Amyloidosis Sarcoidosis Malignancy Neuromuscular (D) Muscular dystrophy Myotonic dystrophy Friedreich's ataxia (H' Sensitivity and toxic reactions (D) Alcohol Radiation Drugs Peripaum hea disease (D)">