This video by Dysautonomia International gives a basic overview of POTS (Postural Orthostatic Tachycardia Syndrome). The video is on Facebook but you don't have to have an account to view it. Patients with POTS or other types of Orthostatic Intolerance may not find much useful information here but it might be helpful for friends and family members who know nothing about POTS. Code: https://www.facebook.com/DysautonomiaInternational/videos/1079102622188616/ Note that this video has very general information on POTS. Some of the information may not apply to ME patients (e.g., exercise suggestions). I still think it's a helpful overview but I wanted to warn folks so that they would not forward it to folks who might not understand these issues.