Postural Orthostatic Tachycardia Syndrome (POTS) is a condition where the heart rate increases very quickly after getting up from sitting or lying down. Symptoms of POTS can vary from person to person and may include:

• Dizziness or lightheadedness, especially when standing up, during prolonged standing in one position or on long walks.
• Fainting or near fainting.
• Forgetfulness and trouble focusing (brain fog) .
• Heart palpitations or racing heart rate.
• Exhaustion/fatigue.
• Feeling nervous or anxious.
• Shakiness and excessive sweating.
• Shortness of breath (dyspnea) .
• Chest pain.
• Headaches.
• Feeling sick.
• Bloating[[5]](h...