Which of the following is a serious illness marked by uncontrolled episodes of overeating, followed by purging with methods such as vomiting or misuse of laxatives or water pills?

Appeared in: DSSSB 13 August 2024

Explanation

Bulimia nervosa is characterized by recurrent episodes of binge eating, which involves eating an amount of food that is definitely larger than what most people would eat in a similar period under similar circumstances.
A key feature is a sense of lack of control over eating during the episode.
These binge-eating episodes are followed by recurrent inappropriate compensatory behaviors to prevent weight gain, such as self-induced vomiting, misuse of laxatives, diuretics, or other medications, fasting, or excessive exercise.
Unlike Anorexia Nervosa, individuals with Bulimia Nervosa typically maintain a body weight at or above a minimally normal level.

Why Other Options Were Wrong

Option A: Pica involves the persistent eating of nonnutritive, nonfood substances (e.g., soil, paper, paint chips). It does not involve binge eating or compensatory purging behaviors related to weight control.
Option B: Rumination disorder is characterized by the repeated regurgitation of food, which may then be re-chewed, re-swallowed, or spit out. This behavior is not driven by a desire to prevent weight gain and is distinct from the binge-purge cycle of bulimia.
Option C: The primary and defining feature of Anorexia Nervosa is the restriction of energy intake leading to a significantly low body weight. While there is a binge-eating/purging subtype, the diagnosis of anorexia nervosa supersedes bulimia if the individual is significantly underweight. The question does not mention low body weight, but focuses on the binge-purge cycle itself, which is the hallmark of bulimia.

Related Visual

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Differentiating features of common eating disorders as background academic context rather than a clinical decision trigger.
Nurses must maintain a non-judgmental attitude and build a therapeutic relationship to encourage patients to disclose sensitive information about eating behaviors.
A key nursing priority is monitoring for and managing medical complications, especially fluid and electrolyte imbalances like hypokalemia from vomiting, which can lead to cardiac arrest. ECG monitoring may be necessary.
Assessment should include checking for physical signs of purging, such as Russell's sign (calluses on the knuckles), dental enamel erosion, and parotid gland swelling.

How to Approach the Question

First, break down the question stem into its core components: 1) 'uncontrolled episodes of overeating' (bingeing) and 2) 'followed by purging' (compensatory behavior).
Recognize that this specific binge-then-purge cycle is the classic definition of a particular eating disorder.
Evaluate each option against this two-part definition.
Eliminate 'Pica' as it involves eating non-food items.
Eliminate 'Rumination regurgitation' as it involves bringing up food without the bingeing component or the goal of weight control.
Differentiate between 'Anorexia nervosa' and 'Bulimia nervosa'. Anorexia's primary feature is severe weight restriction and low body weight. Since the question doesn't mention low weight and focuses on the binge-purge cycle, Bulimia nervosa is the most direct and fitting answer.

Concept Tested & Keywords

Concept Tested: Differentiating features of common eating disorders.
Stem keywords: uncontrolled episodes of overeating, purging, vomiting, misuse of laxatives
Lead-in keywords: Which of the following

Question ID

Qv-quQz_YXyXhkTFPu-tmq

Reference Book

E6 Kaplan Sadock's Synopsis of Psychiatry-2022 (pp 1-3768 of 3768) pp. 1496-1498, 1503-1505

E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) p. 15614-15616

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