Thanks for your query
After going through your description of suffering the most likely treatable cause is- Carpal tunnel syndrome
that is nerve (Median) compression at wrist. This leads to numbness
and tingling sensation
in thumb, index finger and difficulty in doing fine work. May be confirmed by nerve study (EMG/NCV).
The definitive treatment is small surgical procedure in which the tissue causing nerve compression is released. Meanwhile you can give her tricyclic antidepressant
like pregablin after having a word with your local doctor.
Take care and I shall be glad to answer any further query
Dr.mukesh chugh http://bit.ly/drmchugh