What is defined as a false fixed belief without a sensory component?

A false fixed belief without a sensory component is characterized as a delusion. This refers to a belief that is firmly held despite evidence that contradicts it. Delusions can occur in a variety of mental health conditions, including schizophrenia and delusional disorder, where the individual's conviction in their belief is unshakeable even when presented with contradictory facts.

In contrast, hallucinations involve sensory perceptions that occur without an actual external stimulus, such as hearing voices or seeing things that aren't there. Insight refers to the awareness and understanding of one's illness or condition, which is often diminished in individuals experiencing delusions. Reality-based thought indicates a person's capacity to perceive and understand situations accurately as they exist, which is often compromised in those with delusions.