Thanks for the query to H.C.M. Forum.
Almost 33 years back when you were just 17 years old, you saw the paper of 1st semester and became stupefy.
Frankly accept that you were not known that what is in the paper and answers were beyond your reach.
Sorry , if this thing hurt, because this is the part of your problem and treatment.
You mentioned in your query that your hand was not SHAKING but it was not moving ( no paralysis
Still you are able to type from that hand so there was no paralysis ( no disease).
From that period onward you are in confusion that there was a disease, actually you were in tension ( stress
of examination for low performance) and that was the reason.
Your query is , what is happening to you?
Nothing , you were normal at 33 years ago and also now even at the age 50 years.
by a psychiatrist
will CURE you.
Hope I have answered your query.
If further any question I will help.