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BHU NO - 12 April 2024
Mental Health Nursing
Easy

Misinterpretation or misperception of a real external stimuli is called as:

Appeared in: BHU NO - 12 April 2024

Explanation

  • An illusion is defined as a misinterpretation or inaccurate perception of a real sensory stimulus.
  • The defining characteristic of an illusion is the presence of an actual external object or event that is perceived incorrectly.
  • A common example is a person in a dark room mistaking the shadows of furniture for a person or animal.
  • This directly matches the question's description of misperceiving a 'real external stimuli'.

Why Other Options Were Wrong

  • Option B: A hallucination is a perception that occurs in the complete absence of a corresponding external stimulus. The question specifies that a 'real external stimuli' is present.
  • Option C: A delusion is a disorder of thought content, not perception. It is a fixed, false belief that is held despite evidence to the contrary.
  • Option D: Psychosis is a broad clinical syndrome, not a specific symptom. It describes a state of being out of touch with reality and can encompass illusions, hallucinations, and delusions.

Related Visual

Visual explanation — Related Visual
Clinical Relevance
  • Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Disorders of Perception in Psychiatry as background academic context rather than a clinical decision trigger.
  • Accurately identifying and documenting whether a patient is experiencing illusions, hallucinations, or delusions is a critical nursing skill. It directly impacts the psychiatric assessment, diagnosis, and choice of treatment.
  • For example, illusions can sometimes be managed by environmental changes (e.g., improving lighting in a room to reduce shadows), whereas hallucinations often require pharmacological intervention.
  • What if? If a nurse documents that a patient is 'hallucinating' when they are actually having illusions (e.g., misinterpreting the pattern on the wallpaper), it could lead to an inaccurate assessment of psychosis severity and potentially inappropriate medication changes. Correctly identifying it as an illusion points towards a perceptual distortion that might be resolved with environmental modification or reassurance.
How to Approach the Question
  • First, analyze the core components of the question stem. The key phrase is 'misperception of a real external stimuli'.
  • Focus on the word 'real'. This indicates that a stimulus is actually present in the environment.
  • Next, evaluate each option based on its definition in psychiatry.
  • Recall that 'illusion' involves a real stimulus, while 'hallucination' does not.
  • Recognize that 'delusion' is a disorder of belief (thought), not perception.
  • Eliminate 'psychosis' as it is a general state, not the specific term for this single phenomenon. This leads to 'Illusion' as the only correct answer.
Concept Tested & Keywords
  • Concept Tested: Disorders of Perception in Psychiatry
  • Stem keywords: Misinterpretation, misperception, real external stimuli
  • Lead-in keywords: is called as

Question ID

Q8vxlXdnrrJehpz8Z1d6F

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) pp. 3815-3817, 3250-3252

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