Postural Orthostatic Tachycardia Syndrome (POTS) is a condition that affects blood flow and heart rate. It occurs when a person stands up, causing an abnormal increase in heart rate, often by more than 30 beats per minute. This can lead to symptoms like dizziness, lightheadedness, and fatigue, especially after standing for long periods. POTS is part of a group of disorders known as autonomic nervous system dysfunctions. It can be triggered by various factors, including dehydration, prolonged bed rest, or viral infections. Treatment often involves lifestyle changes, increased fluid intake, and medications to help manage symptoms.