Unable to write. To you for my life.

I am 28 yrs old now. Wen i was around 21 One day al of a sudden I realized that I am unable to write my assignment. I didnt took it seriously for some time later I realized I have lost the grip completely. Not only this if I don any work I have severe pain in my right arm. I have gone through all kind of medications ayurvedic, allopathic, homeopathy, hakim. But did not found ny solution. Lastly I left the hope because taking medicines all the time disturbed my health overall. I have stopped writing since then even doing a sign is a challenge for me. Sometimes I really wish to write. When I saw this website I got a hope. Please if you can guide me or help me in any way, I l will be greatful to you for my life.