This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Schizophrenia Spectrum and Other Psychotic Disorders, Subject name: Psychiatry
A 23 year old boy with schizophrenia is well maintained on risperidone for the last 2 months. He has no family history of the disease. For how long will you continue treatment in this patient? 
Select and explain. 
A. 5 years, B. 6 months, C. 2 years, D. 12 months
C: 2 years
Answer: C: 2 years 
Explanation: The history is suggesting that the patient had first episode of schizophrenia and is now maintaining well for last two months It is generally recommended that after first episode, the treatment with antipsychotics should be continued for at least two years. If there are more than one episodes the treatment should continue for at least 5 years. In patients with multiple relapses, indefinite treatment is given.