Causes of dilated cardiomyopathy
The common causes of dilated cardiomyopathy include:
• Genetic: Around 20% of these cases are hereditary.
• Tachycardia induced dilated cardiomyopathy commonly caused by atrial fibrillation.
• Drug abuse involving cocaine, heroin and methamphetamine
• Prescription medicines like phenothiazines and chemotherapeutic medicines like cyclophosphamide, mitoxantrone, trastuzumab, etc.
• Coronary artery disease
• Pregnancy induced, especially in women suffering from pre-eclampsia and post-partum dilated cardiomyopathy.
• Infectious diseases like Rocky Mountain spotted fever, leptospirosis, Lyme disease, toxoplasmosis, Q fever, Chagas disease, cytomegalovirus, adenovirus, etc.
Rarely, dilated cardiomyopathy may be caused by:
• Connective tissue diseases like systemic lupus erythematosus, rheumatoid arthritis, scleroderma, polyarteritis nodosa
• Endocrinal diseases like thyroid disorders, diabetes, acromegaly and obesity
• Electrolyte disturbances
• Toxins like cobalt, mercury and organic solvents