A belief or altered reality that is persistently held despite evidence or agreement to the contrary, generally in reference to a mental disorder.

When to seek immediate medical care

Seek emergency help if:

  • Thinking about harming self or others

When to make a doctor's appointment

Make an appointment to see a doctor if:

  • Interfering with relationships
  • Affecting ability to work
  • Holding steadfast to belief that others insist isn't correct

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