Hello and welcome to Healthcare Magic. Thanks for your query.
From whatever little clinical information you have provided, it appears that your brother may be suffering from autism
or an autistic spectrum disorder. He also seems to be having a significant level of mental retardation (which is commonly associated with autism) and many behavioural problems.
is a very rare psychiatric disorder and has a presentation similar to that of autism. In fact, before the clinical entity of "autism" was established, most of the children with these symptoms were termed as childhood schizophrenia. Currently, this trend has changed and children with these symptoms are diagnosed as having autistic disorders.
Unfortunately, both these disorders are not curable and these persons have to be on medication and need additional support throughout their lives. Regarding your brother's agitation, it can be managed with a combination of medication and behavioural therapy.
Wish you all the best.
Dr. Jonas Sundarakumar