Intrinsic myocardial dysfunction due to structural or electrical abnormality without significant inflammation or ischemia

congenital or acquired

cause of sudden death in young

• Dilated Cardiomyopathy

• Hypertrophic Cardiomyopathy

• Restrictive Cardiomyopathy

• Alcoholic Cardiomyopathy

LV non compaction - embryonic contraction, muscle bundles remain as loose bundles without undergoing normal compaction

• Myocarditis