AIIMS Patna NO - 2020
Mental Health Nursing
Easy
False sensory perception without real external stimulus is known as?
Appeared in: AIIMS Patna NO - 2020
Explanation
- A hallucination is a false sensory perception experienced in the absence of a corresponding external stimulus.
- This phenomenon can affect any of the five senses: auditory (hearing), visual (seeing), olfactory (smelling), gustatory (tasting), or tactile (touching).
- The defining characteristic of a hallucination is the complete lack of an external trigger, which makes it different from an illusion.
- Auditory hallucinations are the most common type in psychiatric conditions like schizophrenia.
Why Other Options Were Wrong
- Option B: An illusion is a misinterpretation or distortion of a real external stimulus. The question specifies a perception 'without' a real stimulus.
- Option C: A delusion is a disorder of thought content, specifically a false, fixed belief that is held firmly despite evidence to the contrary. It is not a sensory perception.
- Option D: Thought insertion is a specific type of delusion where an individual believes that thoughts are being placed into their mind by an outside force. It is a disorder of thought, not perception.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definitions of disorders of perception and thought in psychiatry as background academic context rather than a clinical decision trigger.
- Accurately differentiating between hallucinations, illusions, and delusions is a fundamental nursing skill in mental health assessment. It directly impacts diagnosis, informs the choice of treatment (e.g., antipsychotic medications), and guides the care plan.
- Assessing the content of hallucinations is critical for patient safety. For example, command hallucinations (voices telling the patient to harm themselves or others) require immediate intervention to mitigate risk.
- What if? If a patient stated they saw a face in the patterns of the wallpaper, the nurse should clarify if they know it's just the pattern (an illusion or pareidolia) or if they believe a real face is present (a hallucination). This distinction is crucial for accurate documentation and diagnosis.
How to Approach the Question
- First, identify the core concepts in the question stem: 'false sensory perception' and 'without real external stimulus'.
- The term 'sensory perception' narrows the possibilities to phenomena involving the senses, like hallucinations and illusions, and helps to exclude disorders of thought, like delusions.
- Next, focus on the key differentiator: 'without real external stimulus'. This is the critical piece of information.
- Evaluate the options based on this differentiator. An illusion requires a real stimulus that is misinterpreted. A hallucination occurs with no stimulus at all.
- Therefore, the definition in the question directly matches the definition of a hallucination.
Concept Tested & Keywords
- Concept Tested: Definitions of disorders of perception and thought in psychiatry.
- Stem keywords: False sensory perception, without real external stimulus
- Lead-in keywords: is known as
- Negative lead-in flag: false
Question ID
QR5vmNlJ6B_liHNgowPY9M
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
E6 Medicine Macleod Clinical Examination 15e p. 372-374
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