I smashed and cut my thumb and it somtimes has a electric shock to run through it to my wrist, should i be concerned?

See below: These are symptoms that could be potentially serious. Yous should discuss these with your physician. He/she will thoroughly evaluate you and let you know what's going on.

Possiblenerve injury: When you cut a nerve that provides sensation to the fingers, you can develop a ball of nerve tissue known as a "neuroma" which can be painful and send shock's. The timing of injury also is important. I would have it checked out by a hand surgeon.