I have periodic bouts of severe chest and head pain accompanied by HBP. Also have Hashimotos. Muscle pain and weakness in arms during these "episodes".Xray, EKG, blood work, stress test all ok. Pain is excruitating and debilitating. Where can I go to get diagnosis? My doctors can't figure it out. I am owned lisinopril and clonidine as well as Synthroid.