Congenital Heart Diseases (CHDs) are structural abnormalities of the heart present at birth. These conditions can range from simple defects with little impact on health to complex abnormalities requiring immediate medical intervention. Common types include atrial septal defects, ventricular septal defects, and Tetralogy of Fallot. Symptoms vary depending on the severity of the defect and may include cyanosis, poor feeding, and difficulty breathing. Early diagnosis through prenatal screenings and postnatal evaluations is crucial for effective management.