Hi, thanks for writing to HCM.
Based on the description, propably you could be having carpal tunnel syndrome
which is a form of "entrapment neuropathy" typically seen in computer type writers.
The only way to diagnose this condition is by "Nerve
This can be managed initially with
* SPLINTAGE with the wrist in Extension
* Use of analgesic
and antiinflammatory medications
* Injecting steroids
locally which reduces swelling and thereby pain
* Avoid keeping wrist in flexion for prolonged periods
If everything fails, then surgical decompression is the only option.
I suggest you to consult an orthosurgeon for evaluation and definitive diagnosis.
Hope this helps