An eating disorder is a mental disorder defined by abnormal eating behaviors that adversely affect a person's physical or mental health. These behaviors include eating either too much or too little. Types of eating disorders include binge eating disorder, where the patient keeps eating large amounts in a short period of time typically while not being hungry; anorexia nervosa, where the person has an intense fear of gaining weight and restricts food or overexercises to manage this fear; bulimia nervosa, where individuals eat a large quantity (binging) then try to rid themselves of the food (purging); pica, where the patient eats non-food items; rumination syndrome, where the patient regurgitates undigested or minimally digested food; avoidant/restrictive food intake disorder (ARFID), where people have a reduced or selective food intake due to some psychological reasons; and a group of other specified feeding or eating disorders. Anxiety disorders, depression and substance abuse are common among people with eating disorders. These disorders do not include obesity. People often experience comorbidity between an eating disorder and OCD. It is estimated 20–60% of patients with an ED have a history of OCD.
Bulimia nervosa, also known simply as bulimia, is an eating disorder characterized by binge eating, followed by purging or fasting, as well as excessive concern with body shape and weight. This activity aims to expel the body of calories eaten from the binging phase of the process. Binge eating refers to eating a large amount of food in a short amount of time. Purging refers to the attempts to get rid of the food consumed. This may be done by vomiting or taking laxatives.
Obsessive–compulsive personality disorder (OCPD) is a cluster C personality disorder marked by a spectrum of obsessions with rules, lists, schedules, and order, among other things. Symptoms are usually present by the time a person reaches adulthood, and are visible in a variety of situations. The cause of OCPD is thought to involve a combination of genetic and environmental factors, namely problems with attachment.
The Institute of Psychiatry, Psychology & Neuroscience (IoPPN) is a centre for mental health and neuroscience research, education and training in Europe. It is dedicated to understanding, preventing and treating mental illness, neurological conditions, and other conditions that affect the brain. The IoPPN is a faculty of King's College London, England, and was previously known as the Institute of Psychiatry (IoP).
William Stewart Agras is an American psychiatrist and psychotherapist of British origin, research psychiatrist and Emeritus (Active) Professor of Psychiatry and Behavioral Science at Stanford University. He normally goes by Stewart Agras.
Avoidant Restrictive Food Intake Disorder (ARFID) is a feeding or eating disorder in which individuals significantly limit the volume or variety of foods they consume, causing malnutrition, weight loss, and/or psychosocial problems. Unlike eating disorders such as anorexia nervosa and bulimia, body image disturbance is not a root cause. Individuals with ARFID may have trouble eating due to the sensory characteristics of food ; executive function disregulation; fears of choking or vomiting; low appetite; or a combination of these factors. While ARFID is most often associated with low weight, ARFID occurs across the whole weight spectrum.
Maudsley family therapy, also known as family-based treatment or Maudsley approach, is a family therapy for the treatment of anorexia nervosa devised by Christopher Dare and colleagues at the Maudsley Hospital in London. A comparison of family to individual therapy was conducted with eighty anorexia patients. The study showed family therapy to be the more effective approach in patients under 18 and within 3 years of the onset of their illness. Subsequent research confirmed the efficacy of family-based treatment for teens with anorexia nervosa. Family-based treatment has been adapted for bulimia nervosa and showed promising results in a randomized controlled trial comparing it to supportive individual therapy.
Anorexia nervosa (AN), often referred to simply as anorexia, is an eating disorder characterized by food restriction, body image disturbance, fear of gaining weight, and an overpowering desire to be thin.
Cognitive remediation is designed to improve neurocognitive abilities such as attention, working memory, cognitive flexibility and planning, and executive functioning which leads to improved psychosocial functioning.
The differential diagnoses of anorexia nervosa (AN) includes various types of medical and psychological conditions, which may be misdiagnosed as AN. In some cases, these conditions may be comorbid with AN because the misdiagnosis of AN is not uncommon. For example, a case of achalasia was misdiagnosed as AN and the patient spent two months confined to a psychiatric hospital. A reason for the differential diagnoses that surround AN arise mainly because, like other disorders, it is primarily, albeit defensively and adaptive for, the individual concerned. Anorexia Nervosa is a psychological disorder characterized by extremely reduced intake of food. People with anorexia nervosa tend to have a low self-image and an inaccurate perception of their body.
Geraldine Dawson is an American child clinical psychologist, specializing in autism. She has conducted research on early detection, brain development, and treatment of autism spectrum disorders (ASD) and collaborated on studies of genetic risk factors in autism. Dawson is William Cleland Distinguished Professor of Psychiatry and Behavioral Sciences and professor of psychology and neuroscience, former director, Duke Institute for Brain Sciences and founding director of the Duke Center for Autism and Brain Development at Duke University Medical Center. Dawson was president of the International Society for Autism Research, a scientific and professional organization devoted to advancing knowledge about autism spectrum disorders. From 2008 to 2013, Dawson was research professor of psychiatry at the University of North Carolina at Chapel Hill and was chief science officer for Autism Speaks. Dawson also held the position of adjunct professor of psychiatry at Columbia University and is professor emerita of psychology at University of Washington. She is a fellow of the American Psychological Society, American Psychological Association, International Society for Autism Research, and the Society of Clinical Child and Adolescent Psychology.
Cognitive behavioral therapy (CBT) is derived from both the cognitive and behavioral schools of psychology and focuses on the alteration of thoughts and actions with the goal of treating various disorders. The cognitive behavioral treatment of eating disorders emphasizes on the minimization of negative thoughts about body image and the act of eating, and attempts to alter negative and harmful behaviors that are involved in and perpetuate eating disorders. It also encourages the ability to tolerate negative thoughts and feelings as well as the ability to think about food and body perception in a multi-dimensional way. The emphasis is not only placed on altering cognition, but also on tangible practices like making goals and being rewarded for meeting those goals. CBT is a "time-limited and focused approach" which means that it is important for the patients of this type of therapy to have particular issues that they want to address when they begin treatment. CBT has also proven to be one of the most effective treatments for eating disorders.
Janet Treasure is a British psychiatrist, who specialises in research and treatment of eating disorders.
Ulrike Hermine Schmidt is a British psychiatrist at the Institute of Psychiatry, Psychology and Neuroscience, King's College London in London, where she is Professor of Eating Disorders as well as the Head of the Section of Eating Disorders. Schmidt is a consultant at the Eating Disorders Service within the South London and Maudsley NHS Foundation Trust. Schmidt is known for her ground breaking work helping people with eating disorders and their clinicians.
Philippa Garety is Professor of Clinical Psychology and Clinical Director of the Psychosis Clinical Academic Group (CAG), South London and Maudsley NHS Foundation Trust. Garety specializes in the psychological understanding and treatment of psychosis and, in particular, delusions.
Hamidreza Pouretemad is an Iranian neuropsychologist who is the founder and the Dean of the Institute for Cognitive and Brain Sciences at Shahid Beheshti University and Associate member of the Academy of Science of the Islamic Republic of Iran.
Christopher James Alfred Granville Fairburn is a British psychiatrist and researcher. He is Emeritus Professor of Psychiatry at the University of Oxford. He is known for his research on the development, evaluation and dissemination of psychological treatments, especially for eating disorders.
Claire V. Wiseman is an assistant clinical professor of psychology at the Yale School of Medicine and a practicing clinical Psychologist and researcher who specializes in eating disorders and adolescent body image.
Body image disturbance (BID) is a common symptom in patients with eating disorders and is characterized by an altered perception of one's own body.
Virginia Violet Williams McIntosh is a New Zealand clinical psychologist, and is a full professor at the University of Canterbury, specialising in improving therapy outcomes for disorders such as anorexia nervosa, bulimia nervosa, depression and anxiety.
