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The problems with numbness may be due to injury to the nerve, which is now gradually improving. As long as there is no color change to the fingertip, then unfortunately there is not much we can do for numbness.
The pain however may be improved by using a drug such as gabapentin. You will need an assessment of hand sensation and motor function by a neurologist or hand surgeon. This would identify what underlying processes are involved and you may even need a MRI to look for inflammation or other structural problem.
The pattern of pain and numbness may indicate carpal tunnel, but usually there is a wider distribution pf numbness and tingling affecting specific fingers.
If gabapentin is not controlling the pain then it is definitely time for a review.
What dose are you taking?