Hi I am 62 male. On a couple of occasions my body gets cold and BP rises( 150's ) along with Heart Rate( 85-95) . I am taking metoprolol. What is strange the cold causes my body to shake violently with very noticeable muscle spasm. ER doctors told me my usual suspects are all seems OK, so they said they didn't know why. Why does my core temp. drop when it is cold but not freezing temps? is there an underlying issue? who do I need to consult. Thanks