Diagnosis

The first step towards a diagnosis is to admit the existence of an eating disorder. Often, the patient needs to be compelled by a parent or others to see a doctor because the patient may deny and resist the problem. Some patients may even self-diagnose their condition as an allergy to carbohydrates, because after being on a restricted diet, eating carbohydrates can produce gastrointestinal problems, dizziness, weakness, and palpitations. This may lead such people to restrict carbohydrates even more severely.

It is often extremely difficult for parents as well as the patient to admit that a problem is present. For example, because food is such an intrinsic part of the mother/child relationship, a child's eating disorder might seem like a terrible parental failure. Parents may have their own emotional issues with weight gain and loss and perceive no problem with having a "thin" child.

Interview Tests

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It is recommended that a supportive companion be present during part of the initial medical interview to offer additional information on the patient's eating history and to help offset any resistance or denial the patient may express.

Various questionnaires are available for assessing patients. The Eating Disorders Examination (EDE), which is an interview of the patient by the doctor, and the self-reported Eating Disorders Examination-Questionnaire (EDE-Q) are both considered valid tests for assessing eating disorder diagnosis and determining specific features of the individual’s condition (such as vomiting or laxative use).

Also of note is a brief British test called the SCOFF questionnaire. It is proving to be very reliable in accurately identifying both very young and adult patients who meet the full criteria for anorexia or bulimia nervosa. (It may not be as accurate in people who do not meet the full criteria.)