Short answer · Medically reviewed summary · Last updated: 2026-04-06

The core symptoms of Anorexia Nervosa involve a persistent restriction of energy intake leading to significantly low body weight, an intense fear of gaining weight, and a distorted perception of one's own body shape or size. Characteristic Symptoms and Early Warning Signs In my two decades of clinical practice, I have observed that Anorexia often presents with restrictive eating patterns, such as severe calorie counting, skipping meals, or eliminating entire food groups. Early warning signs for families to monitor include the development of complex food rituals, social withdrawal during mealtimes, excessive preoccupation with exercise, and the frequent use of layers of clothing to conceal weight loss.

6 people with Anorexia have shared their first-person experience on this question at DiseaseMaps.

1

Which are the symptoms of Anorexia?

Symptoms of Anorexia reported by real patients, from the most common to the most limiting, plus a medically reviewed summary with sources.

Anorexia symptoms

The core symptoms of Anorexia Nervosa involve a persistent restriction of energy intake leading to significantly low body weight, an intense fear of gaining weight, and a distorted perception of one's own body shape or size.



Characteristic Symptoms and Early Warning Signs


In my two decades of clinical practice, I have observed that Anorexia often presents with restrictive eating patterns, such as severe calorie counting, skipping meals, or eliminating entire food groups. Early warning signs for families to monitor include the development of complex food rituals, social withdrawal during mealtimes, excessive preoccupation with exercise, and the frequent use of layers of clothing to conceal weight loss. Patients with Anorexia may also exhibit a persistent lack of recognition regarding the seriousness of their low body weight.



Symptom Variation and Impact on Quality of Life


The severity of Anorexia exists on a spectrum; while some patients maintain a baseline of function, others experience rapid physical decline. Daily quality of life is most significantly impacted by the cognitive burden of the disorder—constant, intrusive thoughts about food and body image—which can lead to profound fatigue, irritability, and difficulty concentrating. Physical symptoms like dizziness, cold intolerance (due to a slowed metabolism), and amenorrhea (loss of menstrual cycle) are common hallmarks that signal the body is struggling to maintain basic physiological functions.



Progression and Emergency Indicators


Over time, Anorexia can cause serious systemic complications, including electrolyte imbalances, cardiac arrhythmias, and bone density loss. It is critical to seek immediate medical attention if a patient experiences fainting, chest pain, a heart rate below 40 beats per minute, or signs of severe dehydration. As Anorexia progresses, the psychological rigidity often intensifies, making early intervention essential for improving long-term prognosis.



Medical Disclaimer: This information is for educational purposes and does not replace professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.



References



  • NIH Genetic and Rare Diseases Information Center (GARD): Anorexia Nervosa

  • National Institute of Mental Health (NIMH): Eating Disorders

  • Orphanet: Rare diseases and their management

Author: DiseaseMaps Editorial Team
Reviewed against authoritative medical sources (NIH GARD, Orphanet, OMIM)
Last updated: 2026-04-06
Sources cited: NIH Genetic and Rare Diseases Information Center (GARD): Anorexia Nervosa · National Institute of Mental Health (NIMH): Eating Disorders · Orphanet: Rare diseases and their management
Medical disclaimer: This information does not substitute professional medical advice. Always consult your doctor before making health decisions.
Source: DiseaseMaps.org
7 answers
Significant medical problems
Depression and anxiety
Suicidal thoughts or behavior
Problems with growth and development
Social and relationship problems
Substance use disorders
Work and school issues
Death
Fatigue
Dizziness or fainting
Brittle nails
Hair that thins, breaks or falls out
Menstrual irregularities or loss of menstruation (amenorrhea)
Baby fine hair covering face and other areas of the body (lanugo)
Abnormal bowel functioning
Damaged teeth and gums
Sores in the throat and mouth
Scarring on the back of the hand/fingers used to induce purging
Swollen salivary glands (creating “chipmunk cheeks”)
Menstrual irregularities or loss of menstruation (amenorrhea)
Irritation and inflammation of the esophagus (heartburn)

Posted Mar 4, 2017 by Anna 100
Eating nothing at meals or binge eating. Frequent trips to the bathroom, weight loss, bad breathe. Tooth decay, sores in the mouth, hair loss and brittle nails.

Posted Nov 12, 2017 by Shanna 5000
You perceive yourself to be larger than what you are. In fact, most are very skinny and have malnutrition. You also count any end every calorie you consume then workout enough to burn 3 to 4x what we take in. Only 5% are male. This is primarily a women’s issue

Posted Mar 9, 2018 by Niki 8100
Symptoms include an intense fear of weight gain, body dysmorphia, underweight or rapid weight loss, inability to maintain healthy weight

Posted Apr 3, 2018 by Savanna 450
Translated from spanish Improve translation
Severe depression, isolation, denial to food, underweight ( bmi below 17.5)

Posted Feb 26, 2017 by Jesica 1070
Translated from portuguese Improve translation
Image distortion, loss of control while eating

Posted May 30, 2017 by Ana Luiza 2000

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