Hello, Lately I have been having what I call "adrenaline surges" where I will feel very stressed out for NO reason. I will have tachycardia, sweating and feel very "fight or flight." These are not panic attacks, but almost an exaggerated stress response. I'm sure this is part of my POTS but it has gotten worse lately. I take a beta blocker, Florinef and Klonopin. This combo helps, but not enough. I'm going to schedule an appt with my Cardiologist. Does anyone else have this issue? What seems to help you the most?