Complications of hypoglycemia encompass aspects of both the central nervous system and the heart. Firstly, the central nervous system, due to hypoglycemic episodes, can lead to brain cells lacking energy, which may then cause cerebral edema. This results in severe neuroglycopenic syndrome. Common symptoms include confusion, apathy, and abnormal mental and behavioral actions. If hypoglycemia persists or recurs, it can lead to coma and death. Secondly, cardiac complications arise during hypoglycemic episodes because excitement of the sympathetic nervous system leads to an increased heart rate or sinus tachycardia. Very few patients may experience bradycardia. Additionally, other arrhythmias, including premature atrial contractions, supraventricular tachycardia, ventricular premature beats, and short episodes of ventricular tachycardia, can occur.