Eating Disorders NCLEX Questions

Eating disorders NCLEX questions usually test whether you can recognize the disorder pattern, identify physiologic risk, choose safe communication, and monitor complications such as hypokalemia or refeeding syndrome. The priority is not simply naming anorexia nervosa, bulimia nervosa, or binge-eating disorder. The safest NCLEX answer often depends on vital signs, electrolytes, suicide risk, meal supervision needs, and whether nutrition is being restarted after severe malnutrition.

Use this practice set to think like the nurse at the bedside. Each rationale explains the clinical cue, the risk, and why the correct answer is safer than tempting alternatives. This is NCLEX preparation, not medical advice. Real eating disorder care is individualized and requires licensed medical and mental health professionals.

Quick Review: Anorexia vs Bulimia vs Binge-Eating Disorder

Eating Disorders NCLEX Practice Questions

Question 1

A nurse assesses a client who has lost significant weight, exercises for several hours daily, reports feeling fat despite being underweight, and has a heart rate of 44/min. Which disorder pattern is most consistent with these findings?

1. Bulimia nervosa
2. Anorexia nervosa
3. Binge-eating disorder
4. Somatic symptom disorder

Correct answer: 2. Anorexia nervosa. The key cues are significantly low weight, distorted body image, restrictive behaviors, excessive exercise, and bradycardia. The bradycardia is a physiologic safety concern, not just a background detail. Bulimia involves binge eating with compensatory behaviors and may occur at a normal weight. Binge-eating disorder does not include regular purging or severe restriction as the defining pattern.

Question 2

A client reports recurrent binge episodes followed by self-induced vomiting. The nurse notes dental enamel erosion, sore throat, parotid swelling, and potassium 2.9 mEq/L. Which complication is the priority?

1. Low self-esteem
2. Cardiac dysrhythmia
3. Altered taste sensation
4. Constipation

Correct answer: 2. Cardiac dysrhythmia. Hypokalemia from vomiting, laxative misuse, or diuretic misuse can trigger dysrhythmias. Low self-esteem and GI symptoms matter, but the NCLEX priority is the unstable physiologic risk.

Question 3

A client describes eating very large amounts of food rapidly, feeling unable to stop, and feeling intense guilt afterward. The client denies vomiting, laxative use, fasting, or excessive exercise. Which diagnosis pattern should the nurse recognize?

1. Binge-eating disorder
2. Bulimia nervosa
3. Anorexia nervosa binge-eating/purging type
4. Obsessive-compulsive disorder

Correct answer: 1. Binge-eating disorder. Binge-eating disorder includes recurrent binge eating without regular compensatory purging behavior. The NCLEX trap is choosing bulimia because binge eating is present. Bulimia requires compensatory behaviors such as vomiting, laxatives, fasting, or excessive exercise.

Question 4

A client with anorexia nervosa is admitted with dizziness, dry mucous membranes, blood pressure 82/48 mm Hg, heart rate 42/min, and temperature 95.8 F. Which nursing action has the highest priority?

1. Discuss the client's long-term body image goals
2. Ask the dietitian to review healthy menu choices
3. Place the client on continuous cardiac monitoring as prescribed and notify the provider
4. Encourage the client to participate in group therapy

Correct answer: 3. Place the client on continuous cardiac monitoring as prescribed and notify the provider. Severe bradycardia, hypotension, hypothermia, and dehydration indicate medical instability. Psychosocial interventions are important later, but unstable circulation and cardiac risk come first.

Question 5

A nurse is caring for a client with bulimia nervosa who has been vomiting several times daily. Which lab pattern should the nurse anticipate?

1. Hyperkalemia and metabolic acidosis
2. Hypokalemia and hypochloremic metabolic alkalosis
3. Hypernatremia and respiratory alkalosis
4. Hypocalcemia and metabolic acidosis

Correct answer: 2. Hypokalemia and hypochloremic metabolic alkalosis. Repeated vomiting causes loss of gastric acid and chloride and is commonly associated with low potassium. The priority is recognizing that low potassium increases cardiac risk.

Question 6

A severely underweight client with anorexia nervosa begins nutritional rehabilitation. Two days later the client develops weakness, confusion, edema, tachycardia, and shortness of breath. Phosphate, potassium, and magnesium are low. What complication should the nurse suspect?

1. Refeeding syndrome
2. Serotonin syndrome
3. Neuroleptic malignant syndrome
4. Wernicke encephalopathy

Correct answer: 1. Refeeding syndrome. Refeeding syndrome is a metabolic and electrolyte complication that can occur when nutrition is restarted after starvation or severe malnutrition. The hallmark concern is hypophosphatemia, often with low potassium and magnesium, fluid shifts, and cardiac or respiratory deterioration. Wernicke encephalopathy is also a concern with thiamine deficiency in malnutrition, but this cue cluster points first to refeeding syndrome.

Question 7

Which client is at greatest risk for refeeding syndrome?

1. A client with binge-eating disorder who ate a large meal this morning
2. A client with bulimia nervosa who has normal electrolytes and stable intake
3. A client with severe anorexia nervosa and minimal intake for several days who is starting tube feeding
4. A client with mild nausea who skipped breakfast before a procedure

Correct answer: 3. A client with severe anorexia nervosa and minimal intake for several days who is starting tube feeding. The NCLEX cue is severe malnutrition followed by reintroduction of nutrition. Refeeding syndrome can occur with oral, enteral, or parenteral nutrition. It is not simply overeating.

Question 8

A client with anorexia nervosa says, "I am disgusting. I cannot eat because I am already too big." Which response is most therapeutic?

1. You are not big. You are very thin.
2. You need to eat or you will never get better.
3. Tell me what you are feeling as the meal is served.
4. Everyone here wants you to gain weight.

Correct answer: 3. Tell me what you are feeling as the meal is served. The safest communication focuses on feelings without arguing about the distorted body image. Telling the client they are thin can increase focus on body size. Threats or weight-focused praise can increase anxiety and resistance.

Question 9

A client admitted for bulimia nervosa eats lunch and immediately asks to use the bathroom. Which nursing action is most appropriate if the care plan requires post-meal observation?

1. Allow bathroom use to protect privacy
2. Tell the client that purging is unacceptable
3. Maintain ordered observation after meals and offer supportive redirection
4. Cancel the next meal because the client is anxious

Correct answer: 3. Maintain ordered observation after meals and offer supportive redirection. Post-meal observation may be used to reduce purging opportunities while maintaining dignity. Privacy matters, but safety and the treatment plan guide the nursing action. Shaming language is not therapeutic.

Question 10

A client with an eating disorder says, "If I gain one more pound, I will kill myself." What should the nurse do first?

1. Ask the client to sign a meal contract
2. Stay with the client and initiate the facility suicide safety protocol
3. Explain that weight gain is necessary for recovery
4. Document the statement and reassess at the next meal

Correct answer: 2. Stay with the client and initiate the facility suicide safety protocol. A direct self-harm statement is an immediate safety concern. Teaching, contracts, and delayed reassessment are lower priority when the client may be at risk for suicide.

Question 11

Which nursing instruction is most appropriate for weighing a hospitalized client with anorexia nervosa?

1. Weigh the client whenever the client requests reassurance
2. Use a consistent schedule and clothing according to facility protocol
3. Tell the client the exact weight after every meal
4. Allow the client to negotiate whether weight is measured

Correct answer: 2. Use a consistent schedule and clothing according to facility protocol. Consistency improves accuracy and reduces negotiation around weight. The nurse should follow the treatment plan rather than using weight checks for reassurance or bargaining.

Question 12

A client with moderate to severe bulimia nervosa asks why fluoxetine was prescribed. Which response is accurate?

1. It replaces the need for psychotherapy.
2. It is used only when the client is underweight.
3. It may help reduce binge-eating and vomiting behaviors as part of treatment.
4. It works immediately after the first dose.

Correct answer: 3. It may help reduce binge-eating and vomiting behaviors as part of treatment. Fluoxetine is FDA-labeled for binge-eating and vomiting behaviors in moderate to severe bulimia nervosa. The nurse should not imply that medication alone is the treatment plan. Psychotherapy and interprofessional care remain central.

Question 13

The nurse reviews labs for four clients. Which result requires the most immediate follow-up?

1. Client with bulimia nervosa: potassium 2.7 mEq/L
2. Client with binge-eating disorder: total cholesterol mildly elevated
3. Client with anorexia nervosa: hemoglobin slightly below reference range
4. Client with body image distress: albumin at the lower end of normal

Correct answer: 1. Client with bulimia nervosa: potassium 2.7 mEq/L. Severe hypokalemia creates an immediate dysrhythmia risk. The other findings may need follow-up, but they are not as urgent as a potassium level that threatens cardiac stability.

Question 14

A client with anorexia nervosa is medically stable and says, "I know I need help, but meals make me panic." Which nursing response best supports clinical judgment and therapeutic communication?

1. You should be happy that your weight is improving.
2. Meal anxiety is expected, so there is nothing to discuss.
3. Let us identify what makes meals feel unsafe and which coping skill you can use before the next meal.
4. You cannot leave the unit until you finish every meal.

Correct answer: 3. Let us identify what makes meals feel unsafe and which coping skill you can use before the next meal. This response validates the client's experience and moves toward a safe action. Appearance-focused praise and threats can intensify anxiety. Dismissing meal anxiety misses an opportunity for assessment and planning.

Question 15: Next Gen Case

A 19-year-old client with severe anorexia nervosa is admitted for nutritional rehabilitation after minimal intake for 10 days. On admission: blood pressure 88/54 mm Hg, heart rate 48/min, temperature 96.1 F, glucose 62 mg/dL, potassium 3.1 mEq/L, magnesium 1.5 mg/dL, phosphate 2.0 mg/dL. After nutrition is started, the client reports shortness of breath and muscle weakness. The nurse notes new ankle edema and heart rate 116/min.

Which findings require immediate follow-up? Select all that apply.

1. Shortness of breath
2. Muscle weakness
3. New ankle edema
4. Heart rate 116/min after feeding begins
5. History of distorted body image

Correct answers: 1, 2, 3, and 4. The acute cues point to possible refeeding syndrome and fluid/electrolyte shifts. Shortness of breath, weakness, edema, and tachycardia require prompt assessment, cardiac and respiratory monitoring, lab review, and provider notification. Distorted body image is expected in anorexia nervosa, but it is not the immediate physiologic cue in this case.

Refeeding Syndrome NCLEX Review

On the NCLEX, refeeding syndrome should come to mind when a severely malnourished client begins eating again or starts tube feeding or parenteral nutrition. The danger is not the food itself. The danger is the shift in electrolytes and fluid after nutrition is restarted.

The hallmark electrolyte concern is low phosphate. The nurse should also monitor potassium, magnesium, glucose, fluid balance, thiamine status, respiratory status, vital signs, edema, intake and output, daily weight as ordered, and ECG risk. Severe complications can include dysrhythmias, heart failure, hypotension, pulmonary edema, respiratory failure, seizures, neurologic changes, and renal problems.

The safest NCLEX action is to recognize risk before feeding begins, obtain and monitor ordered baseline labs, anticipate gradual nutrition advancement, administer prescribed electrolyte or thiamine supplementation, and report acute cardiac, respiratory, or neurologic changes. If the stem includes dyspnea, tachycardia, edema, confusion, weakness, low phosphate, low potassium, or low magnesium after nutrition starts, think refeeding syndrome.

Common NCLEX Traps

• Normal weight does not rule out bulimia. Bulimia nervosa can occur in a client whose weight is normal or near normal. Look for binge eating plus compensatory behavior.
• Binge eating alone is not bulimia. If the stem says there is no vomiting, laxative use, fasting, or excessive exercise, binge-eating disorder is more likely.
• Purging does not automatically mean bulimia. If the client has significantly low body weight with anorexia features, the stem may point to anorexia nervosa binge-eating/purging type rather than bulimia nervosa.
• Amenorrhea is a classic cue, not a required cue. NCLEX stems may describe menstrual changes with anorexia nervosa, but do not rely on that finding alone.
• Teaching is not first when the client is unstable. Severe bradycardia, hypotension, syncope, hypoglycemia, hypokalemia, arrhythmia symptoms, respiratory distress, or suicide risk outrank nutrition teaching.
• Do not argue with distorted body image. Therapeutic responses focus on feelings, safety, coping, and the treatment plan rather than debating the client's perception.
• Refeeding syndrome is an electrolyte and fluid-shift emergency. The priority cue is clinical deterioration after nutrition restarts, especially with hypophosphatemia.

High-Yield Nursing Actions

FAQs

What eating disorder topics are most tested on the NCLEX?

Expect questions about anorexia nervosa, bulimia nervosa, binge-eating disorder, electrolyte abnormalities, refeeding syndrome, therapeutic communication, suicide risk, meal supervision, and prioritization. Eating disorder content can cross psychosocial integrity, nutrition, labs, pharmacology, reduction of risk, and clinical judgment.

How do I tell anorexia nervosa and bulimia nervosa apart on NCLEX questions?

Anorexia nervosa usually centers on restriction, significantly low body weight, intense fear of weight gain, and distorted body image. Bulimia nervosa centers on binge eating with compensatory behaviors such as vomiting, laxatives, diuretics, fasting, or excessive exercise. Weight alone is not enough, but significantly low weight points more toward anorexia.

Can someone with bulimia have a normal weight?

Yes. A client with bulimia nervosa may have normal or near-normal weight. On the NCLEX, do not dismiss bulimia because the stem does not describe an underweight client.

What lab value is most important in bulimia nervosa?

Potassium is a major priority because vomiting, laxatives, and diuretics can cause hypokalemia. Low potassium increases the risk for cardiac dysrhythmias, so severe hypokalemia requires prompt follow-up.

What is refeeding syndrome in NCLEX terms?

Refeeding syndrome is a dangerous metabolic and electrolyte shift that can occur when nutrition is restarted after severe malnutrition or starvation. The nurse should connect it with low phosphate, low potassium, low magnesium, fluid shifts, and cardiac or respiratory deterioration.

Which electrolyte is the hallmark of refeeding syndrome?

Hypophosphatemia is the hallmark electrolyte concern. The nurse should also monitor potassium, magnesium, glucose, fluid balance, respiratory status, and cardiac signs.

What is the nurse's priority for a malnourished client starting nutrition?

The priority is to identify refeeding risk, monitor ordered electrolytes and vital signs, assess fluid and respiratory status, and report acute changes. Nutrition is usually advanced gradually according to the treatment plan, with prescribed supplementation as needed.

What is the best therapeutic response to distorted body image?

The best response avoids arguing about size or appearance. Focus on feelings, safety, coping, and the current plan, such as asking what the client is feeling when meals are served.

Why should the nurse observe a client after meals?

Post-meal observation may be ordered to reduce purging opportunities and support the treatment plan. The nurse should maintain dignity, avoid shaming language, and follow facility protocol.

Is fluoxetine used for bulimia nervosa?

Fluoxetine is FDA-labeled for reducing binge-eating and vomiting behaviors in moderate to severe bulimia nervosa. It should be presented as part of treatment, not a replacement for psychotherapy or interprofessional care.

Sources

This article is based on the NCSBN NCLEX test-plan framework, including the 2026 RN and PN test plans effective April 1, 2026 through March 31, 2029, and clinical references including StatPearls reviews on anorexia nervosa, bulimia nervosa, eating disorders, and refeeding syndrome, NICE nutrition support guidance, and FDA labeling information for fluoxetine. Candidates should use official NCSBN materials for current exam framework details.