I have been taking a beta-blocker for six months.  I began having sever palpitations in late June (>5,300 in a 24 hr. period).  They did many heart tests and my heart is not the problem.   My thyroid blood tests were normal as was an adrenal test.  I still get the palpitations, but they are manageable while I am on this medication.  Now I am getting goosebumps!  From my head to my toes several/many times per day.  Even while I am covered up in bed and not chilly!
Thanks for your question on Chat Doctor. I can understand your concern. Since you are on beta blocker, heart related diseases are unlikely to because such symptoms. Sometimes, undiagnosed stress, anxiety and panic disorder can cause similar symptoms. So consult psychiatrist and get done counselling sessions. Try to identify stressor in your life and start working on its solution. You may need additional anxiolytic Chat Doctor.  Don't worry, with counseling an