<prompt> Cardiomyopathy may be seen in all except ?Duchenne muscular dystrophyFriedrichs ataxiaType II glycogen storage diseaseAlkaptonuria  <response>: Ans. is d i.e., Alkaptonuria o Cardiomyopathy, which literally means hea muscle disease, is the deterioration of the function of the myocardium. o Cardiomyopathies can generally be categorized into two groups ? 1. Extrinsic cardiomyopathies o These are the cardiomyopathies where the primary pathology is outside the myocardium. o Most cardiomyopathies are extrinsic, because by for the most common cause of cardiomyopathy is ischemia, ischemic cardiomyopathy. o Other impoant extrinsic cardiomyopathies are alcoholic cardiomyopathy and diabetic cardiomyopathy. 2. Intrinsic cardiomyopathies o An intrinsic cardiomyopathy is weakness in the muscle of hea that is not due to an identifiable external cause. o Intrinsic cardiomyopathies are generally classified into three types. 1.Dilated cardiomyopathy -- 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 Fabrys 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 Friedreichs ataxia H Sensitivity and toxic reactions D Alcohol Radiation Drugs Peripaum hea disease D 