what are the first set of “feeding and eating” disorders in the DSM-5 and ICD-11
pica
rumination disorder (called rumination-regurgitation disorder in ICD-11)
avoidant-restrictive food intake disorder
what are the third-sixth “feeding and eating” disorders in DSM-5 and ICD-11
anorexia nervosa
bulimia nervosa
binge eating disorder
what are the two last categories in the “feeding and eating” disorders in the DSM-5 and ICD-11
other specified feeding or eating disorder (OSFED - previously known as “eating disorder not otherwise specified or EDNOS, changed 2013”)
unspecified feeding or eating disorder
how many categories of “feeding and eating disorders” are there?
8
what is anorexia nervosa
weight loss/low body weight (due to dietary restriction, BMI<18.5, rapid weight loss (ICD-11 only >20% in 6 months, children/adolescent s fail to make expected weight gain)
intense fear of weight gain/avoidance of weight gain even if underweight
disturbance in the way weight and shape is experienced/excessive preoccupation with shape/weight ie over-evaluation of shape/weight and too highly valued in determining self-worth
can’t recognise they are underweight
what are the subtypes of anorexia nervosa
binge eating/purging (recurrent episodes of binge eating and purging=self-induced vomiting, misusing laxatives, diuretics)
restricting (no bingeing/purging- in DSM-5, this is only in the last 3 months)
what is bulimia nervosa
frequent episodes of binge eating
recurrent (inappropriate) compensatory behaviours
over-evaluation of shape and weight
in DSM-5, this binge eating has to be once a week for 3 months
in ICD-11, this has to be once a week for 1 month
what is the binge eating disorder classification in DSM-5
recurrent binge eating
3 of the following:
eating more rapidly than usual
eating until uncomfortably full
eating large amounts when not physically hungry
eating alone due to being embarrassed about the amount being eaten
feeling disgusted with oneself, depressed or very guilty afterwards
must be once a week for 3 months
also:
distress about binge eating
no compensatory behaviour
what is the binge eating disorder classification in ICD-11
recurrent binge eating symptoms:
binge eating occurs over a discreet period of time (ie 2 hours)
eating notably more or differently than usual
sense of loss of control over eating (feeling you cant stop)
must be at least once a week for three months
ALSO distress about binge eating
and
no compensatory behaviour
what did fairburn, copper and shafran 2003 identify about ED diagnosis
overlap of features across EDs:
over-evaluation of shape and weight
overeating vs undereating
compensatory behaviours
attempts to control eating, shape and weight
monitoring weight/shape/eating OR avoidance
common for patients to cross-over between different diagnosis
how common are EDs
1.25 million individuals in UK (BEAT 2018)
DAHLGREN ET AL., 2017= systematic review of interview studies found rates in young females in EU/US:
AN=nearly 1-2 ppl out of 100 lifetime prevalence
BN= 2 ppl out of 100 lifetime prev
BED=3 ppl out of 100 lifetime prev
OSFED=1 person out of 20 OR 1 person out of 10 lifetime prev (5-11% lifetime prev!!)
QIAN ET AL., 2022- meta analysis, lifetime prev rates of AN, BN and BED were 0.16%, 0.63%, and 1.53% BUT now likely to be higher
what is the ED prevalence in diff genders
AN and BN more common in women (10:1)
for BED, 2:1 women to men
BUT prevalence of AN among men is increasing globally as more focus on being muscular or lean, excess protein consumption, steroid misuse etc
roughly 90% cases women
how does ED prevalence vary across cultures
AN in all cultures BUT instead of fear of weight gain, the focus may be on gastrointestinal discomfort or cultural or religious motives AND greater incidence in higher-income countries/those affected by globalisation
purging methods vary cross-culturally ie herbal purgatives for ‘medicinal’ or other reasons
For BED levels of body dissatisfaction and BED varies
LGBTQ community may vary as well!!!
what are physical consequences of EDs
malnutrition (ie cardiac problems, bone deterioration, poor growth)
binge eating (physical damage, obesity and associated risks)
purging (ie dental health, if using self-induced vomiting, and electrolyte imbalance)
AN has the highest mortality rate of all psychiatric disorders due to physical complications and suicide (9X more likely to die than someone without it)
what are impacts of EDs
mortality risks/physical consequences
cognitive (poor concentration)
emotional (anxiety/shame)
social (isolation)
developmental (onset occurs at a time of physical, social and interpersonal)
when do EDs typically start
adolescence
Volpe et al., 2016= 75% occur before the age of 22
what is the typical age of ppl with EDs
of 24,300 ED-related hospital admissions in England in 2020-23, almost half were under 25 years
what are recovery rates of EDs like
modest
early intervention is best (within first 3 years of onset)
see Schmidt et al., 2016, FREED
how did COVID-19 impact EDs
Taquet et al 2022, Touyz et al., 2020, Brown et al, 2021=increased EDs due to social isolation and changes to people’s routine and structure
how many people did 2019 Health Survey for England find had a positive ED
16% of surveyed adults screened positive for a possible ED
who was Averil Hart
history of severe AN
inpatient in a specialist hospital in Cambridge
went to uni 6 weeks later in a diff country and she was immediately transferred to Norwich team with no robust discharge or crisis plan
it took one month to allocate her a care co-ordinator, and the allocated one was inexperienced and miscalculated her weight
no physical health monitoring in her new team
she was gravely ill 3 months after starting uni and passed away in hospital
see “Ignoring the alarms: how NHS earing disorder services are failing patients”
what are the 5 key recommendations for ED treatment
training=train doctors and medical professionals!
parity=achieve parity in the quality and availability of adult services, including better transition from CAMHS
co-ordination=improve multi-service communication, NICE asked to include coordination in its Quality Standard
workforce=address training gaps, Health Education England to review capacity and training to increase availability of ED specialists
investigation=serious-incident learning and data capture need to improve. thoroughly investigate deaths
how can MEED improve how clinical care functions
Managing Medical Emergencies in Eating Disorders (MEED)
Royal College of Psychiatrists (2022)
traffic light system for identifying patients’ risk to life
guidance for all ages and all EDs
updated guidance on physical and psychiatric management
what significant failings did the all party parliamentary group 2025 identify that people with EDs are facing
barriers to treatment access
insufficient healthcare provider training
fragmented care pathways
lack of standardised data around EDs
postcode lottery in service provision
patients are being discharged from services with dangerously low BMIs