Unfortunately, when I am at my worst I get almost every symptom in the book. The worst is this sudden flush, like a hot flash, then the shakes, tingling fingers, lightening in my elbow (Funny bone) and neck, blurry vision,ear pressure, and weak knees. It makes me jump out of my chair. Then I start wondering if I have nerve damage, if I am going blind, if my blood sugar ar pressure is plummiting. Then come the headaches. oooohhh, it's bad!!