Eating What You Should Not: Pica in Autistic Individuals
Pica is a deadly disorder, one which is both standalone but appears also in individuals diagnosed with autism. One of the comorbid disorders related to those on the spectrum, it is a strange behavioural problem that is also defined as an eating disorder which has failed to subside in children older than 36 months. Many children on the spectrum are also diagnosed with pica, one which might be the result of an excessive need for sensory stimulation. This peculiar phenomenon dates back to the Greco-Roman civilization. Rather interesting, as deadly as it can be.
Certain facts concerning the prevalence of Pica have been presented in the November 2012 issue of Psychiatric Annals. Certain intriguing points include:
- Pica is the recurring ingestion of nonnutritive substances. these can include anything from soil to freezer frost to carpets and paint.
- The substances eaten may vary with age and what is available at the moment.
- Within younger population or those with neurological disorders, clinicians see pica as a form of self-soothing behavior that occurs when arousal reaches a certain level.
- Prevalence seems to be higher among certain populations, including pregnant women, children, adults with iron deficiency, and institutionalized individuals.
- A referenced study presents that 33.9% of Detroit children in treatment for sickle cell anemia were diagnosed with pica.
- Pregnant women around the world show different prevalence rates of pica, ranging from 5% to 56%.
- Pica comorbid disorders include: intellectual development disorder, autism spectrum disorder, schizophrenia, avoidant/restrictive food intake disorder (ARFID), and obsessive-compulsive disorder.
Pica's Gender Discrimination
In one particular study, 13 non-nutritive food items were determined to be consumed with the prevalence of geophagy, amylophagy, and of other pica substances such as charcoal and chalk being 53.4%, 85.2% and 19.0% respectively. Furthermore, pica was not found to be higher during pregnancy, contrary to what other studies have suggested. Also, where once it was believed that the prevalence was higher in females, it has been found that one should not discriminate, with males just as likely to be diagnosed with the possibly deadly disorder.
Pica and ASD
Pica, combined with autism spectrum disorder and an intellectual disability, was found to show the least amount of pro-social behavior and the most amount of negative behavior when compared to any of the groupings with single disorders. This conclusion was reached by researchers looking at adults and the degree to which autism and intellectual disabilities combined with pica can contribute to a lack of social skills. The study was published in the October 2012 issue of the Journal of Developmental and Physical Disorders, and claimed that adults with intellectual disabilities and/or with autism spectrum disorders are often at risk for developing additional forms of psychopathology and/or challenging behaviors, including pica.