Hi
Welcome to the MedHelp forum!
If there is infection and pain, then this should be treated immediately. The second possibility is that the bite hit a nerve and the nerve is probably under shock. This will heal in a day or two. Massage the area and exercise the hand. If this does not improve circulation and feeling then consult a doctor. Please let me know if there is any thing else and do keep me posted. Take care!
If it does not go away in a few days, you should seek medical attention. A tendon may be injured or cut, whick may require surgery to fix.
Some weird friends you have :)
This sounds like an interesting "missing piece story."
You were sitting there, minding your own business, when your friend's girlfriend decided to put a little salt on your arm, place her mouth on your left forearm and bite down hard.
It happens every day.
It will probably heal.
It will heal by itself, seems like she bit HARD.