Q: my track pad is jumping around all the time and constantly clicking i tried updating the firmware but the computer states all is up to date, the probleme comes and goes and I'm not shire what triggers it

my track pad will sudenly start jumping around the screen and clicking very rapidly, since te problem began it operates diferently from normal when ever it apears to be working correctly, specificly i can no longer grab items without removing the tracking finger from the pad before clicking to grab an item, if i do not it will procede as if i double cliked somthing, conversly if i disable the two finger tap double click i am unable to double click anything, sometimes whilst apearing to funtion normally it will scroll from side to side if i do not remove my thumb from the bottom of the pad, again these are during the rare instances its not jumping about  the screen cliking, and reaking havoc on what ever im working on any help would be apreciated thanks.