Is a disorder that can develop at any age but usually strikes women between the ages of 15 and 50. POTS is a blood circulation disorder that’s linked to an irregularity in the autonomic nervous system (ANS). The ANS manages crucial bodily functions like heartbeat, blood pressure, and digestion. Ordinarily, when transitioning from lying down to standing, the ANS adjusts blood flow to ensure proper circulation throughout the body, including both upper and lower regions. However, in patients living with POTS, this adjustment doesn’t occur as it should. Consequently, inadequate blood returns to the heart, causing poor circulation primarily in the upper body. Common symptoms include dizziness, fainting, and a notably rapid increase in heartbeat (by 30 beats per minute or more) within 10 minutes of standing up. If you are experiencing repeated bouts of lightheadedness, fainting, difficulty thinking and concentrating, fatigue, headache, blurred vision, heart palpitations, tremors, and nausea.