<unk>  is a group of diseases that affect the heart muscle. Early on there may be few or no symptoms. As the disease worsens, shortness of breath, feeling tired, and swelling of the legs may occur, due to the onset of heart failure. An irregular heart beat and fainting may occur. Those affected are at an increased risk of sudden cardiac death. Types of<unk>  include hypertrophic<unk> , dilated<unk> , restrictive<unk> , arrhythmogenic right ventricular dysplasia, and Takotsubo<unk>  (broken heart syndrome). In hypertrophic<unk>  the heart muscle enlarges and thickens. In dilated<unk>  the ventricles enlarge and weaken. In restrictive<unk>  the ventricle stiffens. In many cases, the cause cannot be determined. Hypertrophic<unk>  is usually inherited, whereas dilated<unk>  is inherited in about one third of cases. Dilated<unk>  may also result from alcohol, heavy metals, coronary artery disease, cocaine use, and viral infections. Restrictive<unk>  may be caused by amyloidosis, hemochromatosis, and some cancer treatments. Broken heart syndrome is caused by extreme emotional or physical stress. Treatment depends on the type of<unk>  and the severity of symptoms. Treatments may include lifestyle changes, medications, or surgery. Surgery may include a ventricular assist device or heart transplant. In 2015<unk>  and myocarditis affected 2.5 million people. Hypertrophic<unk>  affects about 1 in 500 people while dilated<unk>  affects 1 in 2,500. They resulted in 354,000 deaths up from 294,000 in 1990. Arrhythmogenic right ventricular dysplasia is more common in young people.
Cardiomyopathy
Dilated cardiomyopathy
Amyloid cardiomyopathy
Myopathy
Alcoholic cardiomyopathy
Cardiac amyloidosis
Arrhythmogenic cardiomyopathy
Diabetic cardiomyopathy