Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
Delusions are false beliefs that a person firmly holds onto, despite clear evidence to the contrary. These beliefs are not influenced by reality and remain persistent even when they're irrational.
Related terms
Paranoia: This is an irrational suspicion or mistrust of others, often leading to delusional thoughts about others intending harm.
Delusional Disorder: A psychiatric condition in which a person experiences non-bizarre delusions (like being followed or poisoned) that last for at least one month.
A mental disorder characterized by abnormal behavior, strange speech, and a decreased ability to understand reality. Delusions are often part of this disorder.