its not a severe twitch just a slight one but my head does it and its very anoying. It doesnt happen everytime i smoke i dont start twitching as soon as i get hight but i think smoking adds to it like if i have been smoking all day i think im more prone to it and also i think i get it more when im nervous or anxious. i took a trip to florida for 4 days and i didnt smoke the whole time and i also didnt twitch at all. If i go to the docs and tell him whats going on i know exactly what hes gonna say "Stop smoking dope" but i am getting worried about it does anyone have any info or experiences with this at all that could help me otherwise my next step is just go see a dr.