Diastolic dysfunction refers to the impaired relaxation of the heart muscle during the relaxation phase, or diastole, of the cardiac cycle. This dysfunction can lead to problems with filling of the heart chambers and decreased efficiency in pumping blood to the rest of the body. Diastolic dysfunction is commonly seen in conditions such as hypertension, myocardial infarction, and heart failure. It can result in symptoms such as shortness of breath, fatigue, and exercise intolerance. Diagnosis of diastolic dysfunction typically involves echocardiography and other imaging studies to assess the function of the heart muscle. Treatment of diastolic dysfunction involves managing the underlying cause, such as controlling blood pressure or treating heart failure. Medications, lifestyle changes, and sometimes surgical interventions may be necessary to improve symptoms and slow the progression of the condition. Early detection and management of diastolic dysfunction are critical in preventing complications and improving outcomes for patients.