I was reading elsewhere on this site about people taking Diazepam with great success for these spikes. Having said that, I will add that I have been trying to taper off Klonopin, and now strongly suspect that this is causing these symptoms. I was started on Klonopin last fall and started tapering off in February of this year, due to episodes of agitation and irritability. It has been nearly three weeks since I stopped and now these symptoms have flared up! I really suspect that the withdrawal exacerbated these symptoms since I hadn't been having them for a long time. The trouble is, I have a new doctor who although very nice, is rather prejudiced against Benzoes. I have not been successful finding a doctor who is familiar with POTS/Dysautonomia issues, and who would understand this. I usually have atypical reactions to most drugs, but with the exception of Klonopin, I do really well with things like Diazepam, Ativan, and Xanax.