hello,
since i was a boy i have had an unusual condition. the only other person i know of that has this is my father. the condition is this. whatever i do with one of my hands my other hand does as well. so for instance if i scratch my head or rapidly open and close my left hand, my right hand will start to close and open. i have dubbed this my "imitation twitch". the twitch is not strong enouph to push a key on a keyboard but it is strong enouph to pull the trigger on a paintball gun (as i found out the hardway). the "imitation twitch" actually goes up to my elbows. when i carry something heavy with one hand the the mussles in both my arms clench up as if i were carrying it with both. since it has never caused any major difficulties in my life i have never seen a doctor, but was kinda curious about it.