Have Mental Health Questions? Ask a Psychiatrist Online
Welcome to the site.
I am sorry to learn about your situation that you find yourself in but you see at the core of it Delusional disorder is a condition where in the person affected develops a false firm and rather unshakable belief which has no basis or ground or logic but the belief supersedes and goes beyond any sort of reasoning and logic that tries to subdue or go against the belief. In this case of your brother in law, he has developed what is clinically termed as PERSECUTORY DELUSION where he harbors persecutory beliefs of being followed, stalked or spied on by neighbors.
You see your brother in law does not see logic nor does he want to understand that he is delusional and it is only his false belief which is making him behave in this particular manner, so no amount of counseling is going to help him since he lacks insight / awareness into his illness.
At this moment when he is delusional and increasingly becoming paranoid what he needs is anti psychotic medication like olanzapine or quetiapine plus one mood stabiliser such as sodium valproate ( depakene) or divalproex (depakote) would help him to come out of this condition for good. So, the psychiatrist would be the best person to prescribe him this drug regime. Hopefully, this will be a formidable ploy to make him overcome this condition and get peace in his life and also the stability.
I hope this helps.
Wish you all the best.
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