Not sure what you mean by "twitch".
The face can flicker due to facial myokymia
, which may be a lesion in the brainstem. Electrical shocks in upper back or chest, can indicate problems within spinal cord in neck. An MS hug can represent abnormal tightness over chest or abdomen due to spinal cord lesion. Short circuiting can result in brief tonic spasms. Each needs different approaches.