Introduction | Case 2.1Emotionally Disturbed | Case 2.2Increasingly Odd | Case 2.3Hallucinations of a Spiritual Nature | Case 2.4Mind Control | Case 2.5Sad and Psychotic | Case 2.6Psychosis and Cannabis | Case 2.7Flea Infestation
Schizophrenia is the prototypical psychotic
disorder. Not only is it the most common psychosis, but schizophrenia
tends to involve abnormalities in all five of the emphasized symptom domains:
hallucinations, delusions, disorganized thinking (speech), grossly disorganized
or abnormal motor behavior (including catatonia), and negative symptoms.
Like the DSM-5 neurodevelopmental disorders, schizophrenia is viewed
as a neuropsychiatric disorder with complex genetics and a clinical course
that tends to begin during a predictable stage of development. Whereas the
neurodevelopmental disorders tend to begin during childhood, symptoms
of schizophrenia tend to reliably develop during late adolescence
and early adulthood.