system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Postural ohostatic tachycardia syndrome is characterized by all except?
assistant
The correct answer is  Postural ohostatic tachycardia syndrome (POTS)- symptomatic ohostatic intolerance without ohostatic hypotension, associated with either HR of >120/min or increase in HR >30/min when standing that subside on sitting / lying down. The symptoms of ohostatic intolerance include lightheadedness, blurred vision, palpitation and nausea. Usually affects women more than men. This syndrome develops between 15 and 50 years of age.