Final answer:
The term for positive symptoms of schizophrenia involving perception-like experiences without an external stimulus is 'hallucinations,' often auditory in nature. Schizophrenia involves difficulty distinguishing reality from imagination and requires antipsychotic medications for management.
Step-by-step explanation:
The term used to describe positive symptoms in schizophrenia, where perception-like experiences occur without an external stimulus, are vivid and clear, and not under voluntary control is hallucinations. These symptoms are pronounced in schizophrenia and are most commonly auditory hallucinations. Individuals may hear voices or sounds that are not actually present.
Schizophrenia is a complex mental illness, typically becoming evident in late adolescence or early adulthood, and is marked by a range of symptoms including difficulty distinguishing reality from imagination, emotional irregularities, and social challenges. These experiences are often distressing and can lead to significant impairment in daily functioning. Treatments for schizophrenia often involve antipsychotic medications that aim to block dopamine receptors, which can help manage symptoms but are not curative, necessitating ongoing medication management.