What is the SCOFF questionnaire?

The SCOFF questionnaire is a brief mnemonic screen used in clinical and community settings to identify people who may have an eating disorder. The name encodes five domains: Sick (self-induced vomiting or making oneself vomit), Control (loss of control over eating), One stone (substantial recent weight loss in UK units), Fat (body image distortion), and Food (preoccupation with food). Each item is answered Yes or No. The tool was designed to be easy to remember, quick to administer, and usable by non-specialists such as primary care clinicians, nurses, and trained staff in student health or general practice.

SCOFF is intended as a screening instrument. Screening means sorting people into groups that warrant different next steps (for example, fuller assessment versus routine follow-up). It does not establish a specific diagnosis such as anorexia nervosa, bulimia nervosa, binge-eating disorder, or avoidant/restrictive food intake disorder. Those diagnoses require a structured clinical evaluation, often including longitudinal history, physical examination, growth and weight data, and sometimes laboratory or specialty mental health input.

Why use a short eating-disorder screen?

Eating disorders are common, under-recognized, and associated with significant medical and psychiatric morbidity. Many affected individuals do not spontaneously disclose symptoms because of shame, stigma, or fear of judgment. Brief questionnaires can lower the threshold for conversation and help clinicians ask targeted follow-up questions. SCOFF’s five items map onto behaviors and cognitions that frequently appear across several eating-disorder presentations: compensatory behaviors after eating, binge-eating concerns, rapid weight change, distorted body image, and cognitive or behavioral dominance of food and eating.

In busy environments—primary care, urgent care, pediatrics, college health, or preoperative assessment—a tool that takes only a minute or two can be integrated into routine workflows. The mnemonic format supports recall for clinicians who do not use the instrument daily.

The five SCOFF items (mnemonic)

Standard wording may vary slightly by translation or local adaptation, but the conceptual content of each letter is consistent across most published versions.

S — Sick

This item addresses self-induced vomiting or making oneself sick after eating, often driven by fear of weight gain, discomfort after intake, or attempts to “undo” eating. Affirmative answers may appear in bulimia nervosa and in some presentations of anorexia nervosa or other specified feeding or eating disorders. It is clinically important because recurrent vomiting carries risks such as electrolyte disturbance (including hypokalemia), dental erosion, esophageal irritation, and hemodynamic instability in severe cases.

C — Control

This item targets the sense of loss of control over eating—for example, eating much more rapidly or in larger amounts than intended, or feeling unable to stop once started. Loss of control is a hallmark feature in binge-eating episodes and is central to the clinical picture in bulimia nervosa and binge-eating disorder, though it can also occur in restrictive patterns when restraint breaks down. A positive response should prompt exploration of episode frequency, triggers, secrecy, and associated distress or impairment.

O — One stone

The original instrument uses one stone (historically about 14 pounds, or roughly 6.4 kg) of weight loss within a three-month window. That threshold signals rapid or substantial unintentional—or intentionally driven—weight change that merits medical attention. In regions that do not use stone, clinicians often explain the equivalent in pounds or kilograms so patients can answer accurately. Rapid weight loss raises concern not only for eating disorders but also for other medical conditions; therefore, this item should trigger review of vitals, growth charts in youth, medication changes, endocrine disorders, malabsorption, and mood or anxiety symptoms that affect intake.

F — Fat

This item captures body image distortion: the person feels “fat” or overweight despite others perceiving them as thin or underweight. Such cognitive symptoms are common in anorexia nervosa and related presentations and can persist at various body weights. A positive answer invites gentle, nonjudgmental discussion of how the person evaluates their body, how much time they spend thinking about shape and weight, and whether these thoughts interfere with school, work, relationships, or health behaviors.

F — Food

The second “F” concerns whether food dominates life—for example, persistent thoughts about eating, calories, rules, rituals, avoidance, or planning that crowd out other interests and responsibilities. Food preoccupation can accompany restriction, binge cycles, orthorexia-like rigidity, or fear-based avoidance. This item helps surface functional impairment that might not be obvious if the clinician only asks about current weight.

Scoring the SCOFF questionnaire

Each Yes response typically counts as one point. No responses count as zero. The total score therefore ranges from 0 to 5.

The widely cited screening cutoff is two or more affirmative answers. At this threshold, the instrument has been used to flag individuals who should receive a more detailed assessment for a possible eating disorder. Like many screens, SCOFF tends to prioritize sensitivity (capturing true cases) over specificity (avoiding false alarms). That means some people with positive screens will not meet full diagnostic criteria, while a few with negative screens may still have clinically significant pathology—especially if symptoms were minimized, misunderstood, or not covered by the five questions.

How to interpret scores in practice

• Score 0–1: Often interpreted as a negative screen at the conventional ≥2 cutoff. This does not exclude an eating disorder if history, examination, vital signs, growth data, or collateral information raise concern.
• Score ≥2: Interpreted as a positive screen—warranting structured follow-up, risk assessment, and often referral pathways aligned with local resources (primary care mental health, eating-disorder services, or multidisciplinary teams).

Clinical judgment remains essential. For example, a single high-risk feature—such as syncope, bradycardia, severe electrolyte abnormality, or rapid weight loss in an adolescent—may require urgent action even when a brief questionnaire score is low.

Medical risk and the role of the physical examination

Positive responses on SCOFF, particularly on the “Sick” and “One stone” items, should prompt consideration of medical complications. Depending on presentation, clinicians may review orthostatic vital signs, electrocardiographic findings (for example, QT prolongation or bradycardia), and laboratory studies such as electrolytes, renal function, glucose, and hepatic enzymes when indicated. In adolescents, growth curves and pubertal staging add essential context. Pregnancy, diabetes, gastrointestinal disease, and athletic training can complicate weight and eating behavior; the questionnaire is a starting point, not a substitute for individualized workup.

Communication, privacy, and trauma-informed care

Discussing eating and weight can evoke shame or defensiveness. A neutral, respectful tone, clear confidentiality limits, and choice in how questions are asked can improve disclosure. In minors, legal and ethical frameworks govern parental involvement; practices vary by jurisdiction and institution. For patients with trauma histories, linking eating symptoms to coping or control should be explored carefully without forcing detail in a single visit.

How this calculator helps

The CalcMD SCOFF calculator walks through each of the five standard items, applies the usual one-point-per-yes scoring, sums the total (0–5), and applies the ≥2 cutoff to label a positive or negative screen at that threshold. It also summarizes which items were endorsed, which supports documentation and shared understanding of what drove the score. The output is educational and should be combined with face-to-face assessment, local guidelines, and specialist referral when appropriate.

Limitations every clinician should keep in mind

• SCOFF does not map cleanly onto a single DSM or ICD diagnosis.
• Performance metrics differ across populations, settings, and languages; cutoffs are not immutable laws.
• Self-report may be influenced by literacy, cognitive factors, fear of consequences, or desire to conceal symptoms.
• Negative screens do not replace concern when objective data or behavior suggest risk.