Heart disease is divided into several major categories: the first category is cardiovascular disease, the second category is arrhythmia disorders, which are those caused by abnormalities indicated on an electrocardiogram, and the third category is caused by cardiac structural issues, such as dilated cardiomyopathy, which is a heart disease caused by structural problems in the heart. Therefore, we should understand that dilated cardiomyopathy is actually a type of heart disease; it is not the same. Thus, this question is relatively easy to answer, as dilated cardiomyopathy is just one type of heart disease.