thank you everyone, i took him to the doctor ,it is simply a tic
My son has Tic disorder and his twitching changes from time to time. His first twitching started with blinking his eyes alot. He twitched more when he is stressed, nervous, or excited. The doctor said to let him twitch and ignore it. That it is common in boys and they usually outgrow it. I was reading about the disorder and it stated to avoid caffeine. Which is hard for him because he loves chocolate so much. I too believe God has healed him.
Seen and heard of this many times, try ignoring it, sometimes small children aquire a worrisome habit and if it becomes a talking point,it will continue if it gets them extra attention .So instead of watching him do it, make no mention , let him get on with it .See if it stops ..good luck