Anyone have postural orthostatic tachycardia? I am borderline for it. I get sweating and nausea, especially when I stand up. I also have black outs. I had mono and lymes which they say can be caused by it. They say depression and anxiety are not always caused by POTS but it may have been partially in my case, I am not sure. if you have POTS, tell me what it's like for you and how you cope!