The child says that there is beer inside the room; the nurse, using the light, sees that there is a folded towel placed on the chair. The child is experiencing?

Appeared in: AIIMS Delhi NO - 2017

Explanation

An illusion is defined as a false perception or misinterpretation of a real external stimulus.
In this case, the child is looking at a real object, which is a folded towel.
The child's brain misinterprets the sensory information from the towel, leading to the perception of 'beer'.
This matches the definition of an illusion perfectly, as a real stimulus is present but perceived incorrectly.
Illusions can be common in children, or in individuals who are fatigued, anxious, or have a sensory impairment.

Why Other Options Were Wrong

Option A: A hallucination is a sensory perception that occurs in the complete absence of an external stimulus. Since a real object (the towel) was present, this is not a hallucination.
Option C: A delusion is a disorder of thought content, not perception. It is a false, fixed belief that is maintained despite evidence to the contrary. The child's experience is a perceptual error, not a deeply held belief system.
Option D: Depression is a mood disorder characterized by persistent sadness, anhedonia, and changes in sleep or appetite. While it can affect perception (e.g., making the world seem 'gray'), it is not defined by specific perceptual errors like illusions.

Related Visual

Clinical Relevance

Nursing practice connection: Use the key finding related to Differentiation of perceptual disturbances, specifically illusion, hallucination, and delusion to guide bedside assessment, documentation, and the next nursing action.
Nurses must accurately differentiate between illusions, hallucinations, and delusions as they indicate different underlying issues. Illusions are common in delirium, dementia, and high-fever states, while hallucinations are more characteristic of psychosis (like schizophrenia) or substance withdrawal.
Accurate assessment guides intervention. For an illusion, the nurse should reassure the patient and clarify the misperceived object (e.g., turn on a light, let the patient touch the object). For a hallucination, the focus is on safety and addressing the underlying cause.
What if? If the child saw the towel and believed it was a secret message from aliens that only he could decode, this would be a delusional perception—a true perception (the towel) that is given a delusional meaning.

How to Approach the Question

First, analyze the scenario provided in the question stem. Identify the key elements: a stimulus and the patient's perception of it.
Ask the critical question: Is there a real, external object or stimulus present? In this case, yes, there is a 'folded towel'.
Next, ask: How did the patient perceive this stimulus? The child perceived it as 'beer', which is a misinterpretation.
Recall the definitions of the options. An illusion is a misinterpretation of a real stimulus. A hallucination is a perception without a stimulus. A delusion is a false, fixed belief.
Match the scenario to the definition. The misinterpretation of a real object (towel as beer) directly fits the definition of an illusion.
Eliminate the other options based on these definitions. It's not a hallucination because a stimulus exists. It's not a delusion because it's a perceptual error, not a belief system.

Concept Tested & Keywords

Concept Tested: Differentiation of perceptual disturbances, specifically illusion, hallucination, and delusion.
Stem keywords: child, beer, folded towel, sees
Lead-in keywords: experiencing
Clinical cues: The presence of a real object (towel) that is misinterpreted is the key clinical cue pointing to an illusion.

Question ID

QX9y-E2rf8BDdUjZq7hb2t

Reference Book

E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) p. 3815-3817

E6 Medicine Macleod Clinical Examination 15e p. 372-374

E6 Guide to Mental Health & PSYCHIATRIC NURSING R Sreevani— Part 1 (pp 26-289 of 579) p. 51-53

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