Final answer:
The patient's delusions are most likely related to his schizophrenia. Schizophrenia is a serious mental illness characterized by hallucinations, delusions, and difficulty differentiating reality from imagination. Treatment typically involves antipsychotic medications.
Step-by-step explanation:
The patient's delusions are most likely related to his schizophrenia. Schizophrenia is a serious mental illness that can cause hallucinations and delusions, among other symptoms. People with schizophrenia often have difficulty differentiating between reality and imagination, which can lead to false beliefs like thinking someone is trying to poison them.
Treatment for schizophrenia typically involves antipsychotic medications that work by blocking dopamine receptors. However, these medications are not a cure and most patients will need to remain medicated for the rest of their lives. The development of schizophrenia is thought to involve malfunctioning dopaminergic neurons and may also involve problems with glutamate signaling.