Dilated cardiomyopathy is a heart condition characterized by the enlargement and weakening of the heart's main pumping chamber, the left ventricle. This condition reduces the heart's ability to pump blood effectively, leading to symptoms such as fatigue, shortness of breath, and swelling in the legs and abdomen. It can result from various factors, including genetic predisposition, viral infections, and excessive alcohol consumption. The exact cause of dilated cardiomyopathy can vary, and in many cases, it remains unknown. Diagnosis typically involves imaging tests like echocardiograms and MRI, along with blood tests. Treatment options may include medications, lifestyle changes, and in severe cases, surgical interventions or heart transplants.