Anorexia nervosa

Medium urgency
-Moderately severe

Eating disorder characterised by an aversion to food and gaining weight, that makes the person lose weight loss below healthy levels. Generally, it starts in the teenage years or early adulthood, being more prevalent in women.

The main cause is unknown, but risk factors have been described such as the cult of the body, a negative self-image, childhood anxiety disorder, thinness-focused social mores and perfectionist tendencies.

Its main symptoms are weight loss, fear and avoidance of food and social situations around it, as well as alterations in skin and mucous membranes, confused thought, extreme sensitivity to cold and loss of fat and muscle mass.

Most people who suffer from it do not acknowledge having an eating disorder, so they do not act upon it and refuse to be visited by a specialist. In mild cases, behavioural treatment is enough, but severe cases may require hospital admission for stabilisation and artificial nutritional support.

Bibliographic references
  1. Philip Mehler. Anorexia nervosa in adults and adolescents: Medical complications and their management. UpToDate Aug 02, 2016.
  2. Westmoreland P, Krantz MJ, Mehler PS. Medical Complications of Anorexia Nervosa and Bulimia. Am J Med 2016; 129:30.
  3. Steinhausen HC. The outcome of anorexia nervosa in the 20th century. Am J Psychiatry 2002; 159:1284.
  4. Miller KK, Grinspoon SK, Ciampa J, et al. Medical findings in outpatients with anorexia nervosa. Arch Intern Med 2005; 165:561.
  5. Victor I. Reus. Trastornos mentales. Harrison. Principios de Medicina Interna. Volumen 2. 19º Edición. 2719:2720.
  6. C. Ballús, C. Gastó. Síndromes psicopatológicos especiales. Farreras Rozman. Medicina Interna. Volumen 2. 12º edición. 1540:1542.
Author
Dr. Oscar Garcia-Esquirol
Copyright
© TeckelMedical 2026

Symptoms

    Fear of gaining weight


    Weight loss over the last 4-8 weeks


    Marked thinness


    Distorted self-perception of weight


    Self-induced vomit

Pre-hospital care recommendations

Maintain a balanced diet: increase fruit, vegetable, and white meat consumption and reduce the intake of fatty meals and fritters.
Maintain hydration of 2 litres per day.