A 20-year-old male has recently been diagnosed with schizophrenia. The nurse knows which of the following are classic signs and symptoms of this disorder?

Numbers 1, 2, 3, and 4 are correct.

Social withdrawal, agitation, auditory hallucinations, and disorganized speech are all signs and symptoms of schizophrenia. Others include abnormal motor behavior, delusions, catatonia, inability to sleep, and feelings of apathy. Lack of attention to personal hygiene is not a symptom of schizophrenia.