Suggest Treatment For Injury On Little Finger

Hi, I jammed my little finger in the car door. There was no fracture or tendon damage however I seem to have crushed a nerve as the inner side of the little finger up to the first joint is numb. When I press on the inside of the finger anywhere between the hand ant tip, it's like an electric shock. Is there anything I can do to help the healing process of the nerve and will the numbness reside?
Thanks
Sean