They eat sand, metal, or soap: the mystery of pica syndrome.

Pica Syndrome: An Underrecognized Eating Disorder That Leads to The Ingestion of Non-Edible Substances, Sometimes Posing Serious Health Risks. © Freepik – asier_relampagoestudio

Consuming chalk, dirt, or paper might seem unimaginable to most people. Yet, some individuals experience an uncontrollable urge to ingest non-food items, which can be hazardous to their health. This condition is known as Pica syndrome. Largely unfamiliar to the general populace, it raises both intrigue and concern. What are its causes and consequences?

Is it really possible to have cravings for dirt, soap, or metal? As surprising as it may seem, some people do experience an irresistible impulse for these non-food substances.

This behavior, recognized as Pica syndrome, is characterized by the persistent consumption of non-nutritive items. It is not merely an odd dietary preference; it can lead to serious complications, ranging from nutritional deficiencies to poisoning and intestinal blockages.

Pica Syndrome: An Unexpected Eating Disorder

Pica syndrome is classified in the DSM-5 (Diagnostic and Statistical Manual of Mental Disorders) as an eating disorder. It is defined by the repeated consumption of non-edible substances for at least one month, without any aversion to normal foods. The substances ingested vary among individuals and can include:

  • Dirt, clay, chalk
  • Paper, cardboard
  • Hair, nails
  • Paint, plaster
  • Stones, sand
  • Metal, plastic
  • Ashes, cigarette butts

Risk Groups: Who Is Affected By Pica?

Pica syndrome is more prevalent in certain populations:

  • Young children, especially between the ages of 2 and 6, as they explore their environment by putting objects in their mouths. However, this behavior may persist due to a lack of supervision or related disorders.
  • Pregnant women, often driven by deficiencies in iron, zinc, or calcium, leading to cravings for items like chalk, clay, or ice. Additionally, hormonal influences could also play a role, altering taste perceptions and food cravings.
  • Individuals with autism spectrum disorder or intellectual disabilities, who might engage in this behavior habitually or for self-stimulation.
  • Patients with psychiatric disorders such as schizophrenia, dementia, or obsessive-compulsive disorder.
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Although less common in healthy adults, Pica can arise in response to nutritional deficiencies, stress, or eating disorders. This often-underrated condition can pose serious risks, requiring appropriate management.

What Leads To The Consumption of Non-Edible Objects?

The onset of Pica syndrome is influenced by various psychological and environmental factors.

  • Psycho-social factors: Anxiety, stress, and a desire for sensory experiences may lead individuals to develop Pica, particularly among those with mental health issues such as OCD, autism, or schizophrenia. Feelings of shame and emotional distress also play a significant role.
  • Environmental factors: Trauma, parental neglect, and disorganized family structures may increase the risk. Moreover, some cultures accept certain forms of Pica, like the consumption of kaolin.
  • Nutritional and developmental factors: Maternal deprivation, malnutrition, or excessive oral stimulation during childhood may foster this behavior.

Risks and Complications: When Pica Poses Health Hazards

Pica syndrome can lead to various complications depending on the substances ingested. Digestive risks include intestinal blockages that may require surgery, as well as perforations or ulcers caused by consuming hard or sharp materials.

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Poisoning, especially from lead through old paint or contaminated soil, can cause neurological and kidney damage. Ingesting dirt or feces exposes individuals to parasitic or bacterial infections (such as E. coli or Salmonella), resulting in diarrhea and dehydration.

Lastly, Pica can worsen nutritional deficiencies, particularly in iron and zinc, increasing the risk of anemia and malnutrition, especially among children and pregnant women.

Identifying Pica: How To Make An Accurate Diagnosis?

The diagnosis of Pica relies on several factors:

  • A comprehensive interview with the patient and their family to identify the substances ingested and the frequency of the behavior.
  • Laboratory tests to check for potential deficiencies in iron, zinc, or other nutrients.
  • Imaging tests (X-rays, ultrasounds) if there is suspicion of digestive complications.

Healthcare professionals must also assess for any associated psychiatric or developmental disorders.

Managing Pica: Strategies For Effective Treatment

Treatment for Pica depends on its underlying cause:

  • Addressing deficiencies: Supplementation of iron or zinc may help mitigate behaviors linked to nutritional deficits.
  • Behavioral approaches: Cognitive-behavioral therapy (CBT) can assist in changing eating habits and controlling impulses.
  • Medical and social support: For those with developmental disorders, individualized follow-up may be needed to reduce harmful behaviors.
  • Medications: In some cases, psychotropic drugs may be prescribed to manage associated psychiatric conditions.
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Care often requires a multidisciplinary approach, involving physicians, nutritionists, psychologists, and specialized educators.

Pica syndrome is much more than an unusual behavior; it can have dire health consequences if not addressed promptly. Frequently overlooked, this disorder conceals deep-rooted causes ranging from anxiety to nutritional deficiencies and trauma. However, it is not an inevitability. By recognizing early signs and taking swift action, serious complications can be avoided.

IMPORTANT TO NOTE

Pica syndrome can be associated with anorexia, bulimia, or other eating disorders. Some individuals have been hospitalized after ingesting large quantities of metal, hair, or plastic.