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Causes include:

  • idiopathic
  • infiltrations or granulomatous disease:
    • amyloidosis - commonest cause in the UK
    • sarcoidosis
    • malignancy, such as leukaemic infiltration
    • haemochromatosis
  • eosinophilic endomyocardial disease
  • endomyocardial fibrosis
  • familial storage disease:
    • glycogen storage disease
    • mucopolysaccharidoses
  • endocardial fibroelastosis

Source: adapted from the WHO/ISFC task force report on the definition and classification of cardiomyopathies, 1980.

Last reviewed 01/2018