Schizophrenia - Urgent, please help

My son 32 years of age, a 3rd year university science student suffering from severe symptoms of Schizophrenia. Symptoms are sleeplessness,Laughter and Talking to himself day and night but not while sleeping, Talking even during meals. He talk to himself not to others. If someone, not our family member home, he will not talk. When we asked him he said talk comes on its own, he could not control it. But he avoid when others around him. Laughter, very high, some times it stops his breathing. These symptoms continue all the seasons,
no exceptions.

He don't like company. Did not like going out either. If he go, University and Library only. All other times like to be come, mostly in bed talking and laughting. Also walks up and down inside the house. Every tern, go to kitchen open fridge pick up some thing and eats. Eats a little at a time, several times a day.

Gets sleep late night or early morning and getsup around noon or afternoon. Last two nights he had no sleep. Days he had no sleep, the symptoms get worse, very high, gets angry, easly.

Medium build, 65kg craving for faty, salty, meat foods. Not interest on vegetable.

15 years ago he had a fever. Took medication for malayria, two weeks after, for another two weeks, malayria tablets. We are not sure that was a malayria fever. He had a fever only, there was no any known malayria symptoms seen.

10 years ago, souldiers slamped his head, back side against a wall, a couple of times. At that time he was sawing symptoms of hearing voices and in night he was just looking at the book and laughting.

He is on allopathic medications for over 10 years, he got worse now. A lot of side effects, poor vision, hair falling etc.

When he talk with his mom or sister, he try to advice them. They normaly do not agree with him then get angry. Always complains about me. In his version, I who took him to doctor and forced him to take allopathy medications because of that he is suffering from all these symptoms. He is unable to concentrate on his study, and even he complete it, may not be able to get any job. He himself can't initiate anything. Some one has to tell him what to do. Unable to do him own daily routines, washing his cloths, making bed, cleaning wash room etc.

He worries about his future. His medications cost him a lot per month. He fears that if he can't get a job, he will not be able to buy his medication. So he will end up in a medical facility. He simply do not like it. When he get all these in his mind he gets angry and the symptoms get worse.

Urgent, please help. Advice approperiate medications. If need more info please post.

Thank you in advance,
Sam