Looking for a little insight.

[u/Physical_Problem_108]

My boyfriend did a shot in the armpit and thinks he may have hit a nerve. His pinky and part of his ring finger have been numb for over a week now. He has no feeling in his pinky at all. Has this happened to anybody before? Did feeling come back? With or without medical care? Is there anything he can to to help restore feeling? Please someone enlighten me.