Tom has auditory hallucinations in which he hears voices saying, "cut yourself and die." This is an example of a positive symptom of schizophrenia.

Auditory Hallucinations

Perceptions of hearing noises or sounds, such as voices, music, or ringing, in the absence of external stimuli.

Positive Symptom

In psychology, observable behaviors or thoughts, such as hallucinations or delusions, that are present in disorders but not in healthy individuals.

Schizophrenia

A long-term mental disorder involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception, inappropriate actions and feelings, and a withdrawal from reality.