ABSTRACT
This chapter presents a case of a young man who is presented to his general practitioner (GP) in a state of agitation after a few months short of his 18th birthday. Although his parents are worried about him, he does not really think there is a problem. He is hearing voices that are auditory hallucinations and these cause him some anxiety. He attended Child and Adolescent Mental Health Services (CAMHS) about 12 months ago when he had lost interest in his previous activities and had become increasingly withdrawn although no low mood was reported. The differential diagnoses in this case are schizophrenia, substance-induced psychosis and depression with psychosis. Schizophrenia is the most likely diagnosis. It is highly likely that he was in the prodromal phase of the illness when he first presented. The risk is exacerbated by the fact that he does not have much insight and so engagement with one services may be difficult for him.
