What is a characteristic of mania that includes psychosis?

In the context of mania, particularly when it includes psychotic features, hallucinations are a prominent characteristic. During a manic episode, individuals may experience psychotic symptoms such as hallucinations, which can be auditory, visual, or even tactile. These hallucinations can significantly alter a person's perception of reality, often leading to behaviors that may seem bizarre or disconnected from what others are experiencing. This psychotic feature is indicative of the severity of the manic episode, distinguishing it from milder forms of mania that do not include such symptoms.

The other characteristics listed do not specifically pertain to mania with psychosis. While impaired memory may occur, it is not a defining feature of manic psychosis. Zoned-out behavior might suggest detachment but does not specifically indicate psychosis, and excessive sleepiness typically contrasts with the hyperactivity associated with mania. Hallucinations, on the other hand, demonstrate a clear link to the psychotic aspect of a manic episode, making them the correct choice in this scenario.