Heart Failure is a complex syndrome that arises as a severe complication of various cardiac disorders. It is characterized by high mortality rates, akin to those seen in malignant diseases. It is categorized based on cardiac function into two main types: Heart Failure with preserved ejection fraction and Heart Failure with reduced ejection fraction. The latter is further subdivided into mild and severe reductions in function. Common clinical manifestations include dyspnea, peripheral edema, and fatigue. The etiology of Heart Failure may include ischemic, valvular, and myocarditis-related origins, among others influenced by factors such as post-tachycardia, pharmaceutical interactions, alcohol use, etc. The functional classification remains a crucial aspect of understanding and managing the disease.