For a couple years I have been having these outbursts pretty rarely but what happens is I snap and start laughing uncontrollably and rather loud i have a huge grin on my face and i get extremely violent before this happens or during my neck will twitch to the side and so will my eye y mind goes blank and all i want is to hurt or even kill someone or something i have hurt friends and family because of this doctors haven't given me a solid answer they say it could be a few different things