sougata mukherjee, I am sorry that you have been suffering so much. However, I am another person who found it difficult to read your post and so I can't say that I've read it thoroughly.

But it looks as if you've been trying out too many different medicines, and I wonder about your diet. Many neurological problems are due to a deficiency or an excess of some important element in the person's diet.

I agree with Snoopy that you need to present your primary care doctor with your history. The medicines you've been taking as well as your diet should be carefully evaluated.

As for the insomnia, there are many ways of dealing with it that do not involve taking any pills. Your doctor can probably make some good suggestions.