Hello,
What it appears to me is that you are a professional typewriter or maybe your job demands typing work a lot.
This kind of pain arises due to overuse of the Forearm muscle for typing and which leads to
fatigue.
There may be even a chance of the
nerve entrapment in the cervical region due to which the possible ability of the muscle reduces and fatigue sets in faster.
But we can only confirm this with physical examination and if required an
MRI scan.
You try some Basic forearm muscle strengthening exercises and also some stretching exercises of the Forearm muscles to overall improve the functionality of the muscles.
Rest assured, you will be fine if you follow these guidelines in about 2-3 weeks of time.
Please note that if your job demands more of the physical work with a keyboard then follow these exercises regularly to avoid future injuries.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Jay Indravadan Patel, Physical Therapist or Physiotherapist