He has having nagative thoughts everytim

He has having some nagative thoughts for his wife. Like always he want to monitor her where she will seat ,how she will walk, with whom she will talk , at which time and she will go outside for shopping ...etc. And if someone(male) will come to our home for any work if that person will talk to with my mother and in conversation if they smile or laugh then my father's thought will get change and then he will behave so rudely with my mother. He strated shocking to my mother. There is many things to tell but not not possible to write everything. This type of behavior is growing day by day. Don't know what's the solution for this. Please for this concern only we need doctors help to find out why he is thinking like this,why he is not behaving like a normal person. Please help us for this. I hope you will understand our situation and will help us. !!Thanks!!