Purging disorder

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Purging disorder is an eating disorder, more specifically a form of other specified feeding or eating disorder. [1] It is characterised by the DSM-5 as self-induced vomiting, or misuse of laxatives, diuretics, or enemas to forcefully evacuate matter from the body. [1] The lifetime prevalence (percentage of individuals in a population who have experienced the disorder at any point in their lives) of purging disorder has been estimated from 1.1% to 5.3%. [2]

Contents

Purging disorder differs from bulimia nervosa (BN) because individuals do not consume a large amount of food (also called a binge) prior to purging. [1]

Some of the signs of this disorder include trips to the bathroom directly after a meal, frequent use of laxatives, and obsession over one's appearance and weight. Other signs, all which are the result of excessive vomiting, consist of swollen cheeks, popped blood vessels in the eyes, and clear teeth. [3] [4]

Purging disorder is studied far less than other eating disorders [5] hence little information is known about the risk factors, including the effect of gender, race, and class. However, as with most eating disorders, it disproportionately affects women, preoccupation with shape and weight puts this group at elevated risk for eating disorders, including this one. [5] In one study of the risk factors for purging disorder, 77% of the participants who presented with symptoms of purging disorder were female. [6]

It has been argued that purging disorder should be considered a distinct eating disorder, separate from bulimia nervosa. [7] [8] [9] [10]

Signs, Symptoms and Causes

Signs

Some of the signs of this disorder include inappropriate influence of body shape and weight, recurrent purging to influence body weight or shape [7] and Russell's sign. [11]

Symptoms

The symptoms include the absence of binging episodes as well as purging behaviours occurring at least once per week for at minimum 3 months [7]

Causes

Risk factors

Some of the risk factors include Dieting, Thin-ideal internalization [12] and Body dissatisfaction. [12]

Genetic

The heritability of some eating disorders has been well established, [13] but to date there are no documented family studies of purging disorder to understand the familial nature of purging disorder. [14]

Diagnosis

The DSM-5 is used as a reference to diagnose Purging Disorder. A patient with Purging disorder will be diagnosed with other specified feeding or eating disorder. [2]

Complications

Purging behaviors, specifically self-induced vomiting and laxative use are associated with the following medical complications:

Purging disorder progressing into bulimia nervosa has been observed. However, it is extremely rare for the reverse situation. Bulimia nervosa progressing into purging disorder. This was observed once in a transgender patient with a severe history of bulimia nervosa but presented with symptoms of purging disorder to an eating disorder treatment facility in New Zealand. [5]

Treatment

Treatment for purging disorder can be multidisciplinary. One approach to treatment is cognitive behavioral therapy. [15]

Prognosis

Children and teenagers with purging disorder have been found to have poorer health-related quality of life than their healthy peers. [16] A small review of 11 cases of purging disorder where death occurred found that only 5 of the 11 deaths could be attributed to the purging disorder. [15] The remaining 6 deaths were a result of suicide. [15]

References

  1. 1 2 3 Diagnostic and statistical manual of mental disorders : DSM-5. Arlington, VA: American Psychiatric Association. 2013. ISBN   978-0-89042-554-1.
  2. 1 2 Smith, Kathryn E.; Crowther, Janis H.; Lavender, Jason M. (2018). "A review of purging disorder through meta-analysis". Journal of Abnormal Psychology. 126 (5): 565–592. doi:10.1037/abn0000243. ISSN   1939-1846. PMC   5741973 . PMID   28691846.
  3. Carcieri, Elisha (2019). "Purging Disorder". Mirror-Mirror.
  4. "Little-known purging disorder is often missed". NBC News. Associated Press. 19 September 2007.[ dead link ]
  5. 1 2 3 Surgenor, Lois J.; Fear, Jennifer L. (December 1998). "Eating disorder in a transgendered patient: A case report". International Journal of Eating Disorders. 24 (4): 449–452. doi:10.1002/(sici)1098-108x(199812)24:4<449::aid-eat14>3.0.co;2-w. PMID   9813772. ProQuest   211126302.
  6. Allen, Karina L.; Byrne, Susan M.; Crosby, Ross D. (19 September 2014). "Distinguishing Between Risk Factors for Bulimia Nervosa, Binge Eating Disorder, and Purging Disorder". Journal of Youth and Adolescence. 44 (8): 1580–1591. doi:10.1007/s10964-014-0186-8. PMID   25233874. S2CID   28204545.
  7. 1 2 3 Castillo, Marigold; Weiselberg, Eric (2017-04-01). "Bulimia Nervosa/Purging Disorder" . Current Problems in Pediatric and Adolescent Health Care. 47 (4): 85–94. doi:10.1016/j.cppeds.2017.02.004. ISSN   1538-5442. PMID   28532966.
  8. Keel, Pamela K.; Striegel-Moore, Ruth H. (2009). Walsh, B. Timothy (ed.). "The validity and clinical utility of purging disorder" . International Journal of Eating Disorders. 42 (8): 706–719. doi:10.1002/eat.20718. PMID   19642215.
  9. Keel, Pamela K. (2007). "Purging disorder: subthreshold variant or full-threshold eating disorder?". The International Journal of Eating Disorders. 40 Suppl: S89–94. doi: 10.1002/eat.20453 . ISSN   0276-3478. PMID   17868124.
  10. Koch, Sonja; Quadflieg, Norbert; Rief, Winfried; Fichter, Manfred (2013). "[Purging disorder--a distinct diagnosis? Review about the current state of research]". Psychotherapie, Psychosomatik, Medizinische Psychologie (in German). 63 (8): 305–317. doi:10.1055/s-0032-1331212. ISSN   1439-1058. PMID   23382033.
  11. 1 2 3 4 5 6 7 Forney, K. Jean; Buchman-Schmitt, Jennifer M.; Keel, Pamela K.; Frank, Guido K. W. (2016). "The medical complications associated with purging". The International Journal of Eating Disorders. 49 (3): 249–259. doi:10.1002/eat.22504. ISSN   1098-108X. PMC   4803618 . PMID   26876429.
  12. 1 2 Stice, Eric (2016). "Interactive and Mediational Etiologic Models of Eating Disorder Onset: Evidence from Prospective Studies". Annual Review of Clinical Psychology. 12: 359–381. doi:10.1146/annurev-clinpsy-021815-093317. ISSN   1548-5951. PMID   26651521.
  13. Rikani, Azadeh A.; Choudhry, Zia; Choudhry, Adnan M.; Ikram, Huma; Asghar, Muhammad W.; Kajal, Dilkash; Waheed, Abdul; Mobassarah, Nusrat J. (2013). "A critique of the literature on etiology of eating disorders". Annals of Neurosciences. 20 (4): 157–161. doi:10.5214/ans.0972.7531.200409. ISSN   0972-7531. PMC   4117136 . PMID   25206042.
  14. Thornton, Laura M.; Mazzeo, Suzanne E.; Bulik, Cynthia M. (2011). The Heritability of Eating Disorders: Methods and Current Findings. Current Topics in Behavioral Neurosciences. Vol. 6. pp. 141–156. doi:10.1007/7854_2010_91. ISBN   978-3-642-15130-9. ISSN   1866-3370. PMC   3599773 . PMID   21243474.
  15. 1 2 3 Koch, Sonja; Quadflieg, Norbert; Fichter, Manfred (2014-03-01). "Purging disorder: a pathway to death? A review of 11 cases" . Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity. 19 (1): 21–29. doi:10.1007/s40519-013-0082-3. ISSN   1590-1262. PMID   24198060. S2CID   207497017.
  16. Wu, Xiu Yun; Yin, Wen Qiang; Sun, Hong Wei; Yang, Shu Xiang; Li, Xin Yang; Liu, Hong Qing (2019). "The association between disordered eating and health-related quality of life among children and adolescents: A systematic review of population-based studies". PLOS ONE. 14 (10): e0222777. Bibcode:2019PLoSO..1422777W. doi: 10.1371/journal.pone.0222777 . ISSN   1932-6203. PMC   6777752 . PMID   31584956.