Jeremy, a 21-year-old pizza delivery man, has been experiencing auditory hallucinations and delusions for the past three months while working. He has trouble focusing on tasks and following conversations. Based on his symptoms, the psychiatrist diagnoses Jeremy with schizophrenia. To confirm the diagnosis, tests are performed to rule out other potential causes and further examine his thoughts, moods, and mental status. Schizophrenia is thought to involve excessive dopamine activity in the brain and abnormal synaptic pruning, though the exact mechanisms are unknown. Lifelong treatment typically involves antipsychotic medication alongside therapy.