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Delusion, Hallucination, Illusion — NCLEX Cheat Sheet

Is anything actually there?
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👤 By the CinnaRN Clinical Content Team 🕐 Updated 2026-08-31 🏷️ Psychosocial Integrity 🔖 Free to read, print, and share
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Use this quick-reference guide to spot, treat, and prevent Delusion, Hallucination, Illusion on the NCLEX. Keep it handy during review and on exam day!

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📒 The 1-minute cheat sheet

📌 Delusion — Thinking

  • A false, fixed belief. Nothing sensory.
  • Paranoid, grandiose, somatic, jealous, persecutory
  • Do not argue, do not agree

📌 Hallucination — Nothing There

  • A sensory experience with no stimulus
  • Order of frequency: auditory, visual, tactile
  • Command hallucinations = safety emergency

📌 Illusion — Something Is There

  • A real object, misread
  • A cord seen as a snake, a shadow as a person
  • Fix the lighting and the noise

📌 The Exam Cue

  • ‘Nothing there’ → hallucination
  • ‘Something there, read wrong’ → illusion
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Quick Tip

Focus on the highlighted numbers and the red-flag items — those are what the NCLEX tests most on delusion, hallucination, illusion.

📖 Related Topics

Therapeutic Communication TechniquesDefense MechanismsCrisis InterventionGrief and Loss
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