<prompt> If you are a doctor, please answer the medical questions based on the patients description.my dad who is 58 years old his weight:60 kg height :maybe 5.8.he keeps on talks on the same topic...and also he hallucinate things which hav never happened.he avoids whole family and he himself feel alone he smoke a lot.he keep smiling even he is alone .for past 10 years he is like dis .my aunt she is a doctor who suggested for sizodon 4ml per day...for few weeks is it suggestable for him.i want my dad bck pls help by suggesting me  <response>: Hello and welcome to Chat Doctor. Thanks for your query. I understand that you are quite worried about your dad. From the description of his symptoms it appears that he may be suffering from a chronic psychotic disorder like Schizophrenia. Soon Risperidone is an anti-psychotic medication which is used for treating psychotic disorders. It is usually effective in controlling psychotic symptoms like hallucinations. I would suggest that you take your dad to a psychiatrist in order to have a proper evaluation so that the correct diagnosis can be made, and the appropriate treatment can be initiated. Wish you all the best. 