Trichotillomania and Excoriation can both be

Question

BlackTom AI · Accepted Answer

Both trichotillomania (hair-pulling disorder) and excoriation (skin‑picking) disorder are body‑focused repetitive behaviors that are often maintained by sensory and emotional reinforcement — specifically by experiencing pleasure, gratification, tension reduction, or relief after the act.

1. Relevant knowledge points and concepts
- DSM‑5 places these conditions among obsessive‑compulsive and related disorders; core features include recurrent pulling/picking with repeated attempts to stop and clinically significant distress or impairment.
- Two common functional patterns: “automatic” behaviors (performed with little awareness) and “focused” behaviors (performed in response to urges or emotional states).
- Typical operant reinforcement: an urge/tension precedes the act, and pulling/picking produces immediate relief or gratification, reinforcing repetition.

2. Step‑by‑step reasoning
- Patients often report mounting tension or an urge before pulling/picking.
- The act relieves that tension or produces a pleasurable sensory experience (satisfaction, relief, or gratification).
- That immediate positive consequence functions as positive/negative reinforcement (positive: pleasurable sensation; negative: removal of tension/distress), increasing the likelihood of recurrence.

3. Intermediate steps (clinical features tied to reinforcement)
- Urge/tension → hair/skin manipulation → momentary gratification or relief → behavior reinforced → repeated episodes and difficulty stopping.

4. Why the correct answer is correct
- The statement “motivated by stimulation of positive mood or feelings (i.e., pleasure, gratification or relief)” accurately describes the reinforcement mechanism experienced by many individuals with these disorders; DSM‑aligned descriptions explicitly note relief/pleasure following the behavior as central to maintenance.

5. Why other options are incorrect
- “Motivated by intrusive thoughts associated with concerns about appearance” describes body dysmorphic disorder, not the typical mechanism for hair‑pulling/skin‑picking.
- “Associated with concerns about memory” is unrelated; these behaviors are not driven by memory concerns.
- “Easily controlled” is false: they are often difficult to control despite attempts, which is part of diagnostic criteria.

6. Conclusion
The correct choice is that these behaviors are motivated by stimulation of positive mood or feelings (pleasure, gratification, or relief), matching the provided answer.

Trichotillomania and Excoriation can both be单项选择题

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