Having been diagnosed GAD ive had many of the normal anxiety symptons but over the last 3 years i have had a strange but debilitating thing happen. I get palpitations but then a stiffening of the facial muscles, often also a droop in my lower lip, my whole face,jaw and teeth tense and clench up, so i can hardly talk or eat. Only thing i find to do to try and ease it is to lay down in the dark and when available take a clonazapem. It makes me tired without the medication and can get such a bad one it can last 2 days. I'm desperate as i'm now getting them so often, even with situations or people that i am normally comfy with. I have seen a neurologist as i am on a anti anxiety/ depression meds and he thought i had a side effect from too much serotonin. My only next hope is therapy. Any thoughts or comments welcomed, desperate!