Pica

Pica

Many young kids put nonfood items in their mouths at one time or another. They're naturally curious about their environment and might, for instance, eat some dirt out of the sandbox.

Kids with pica, however, go beyond this innocent exploration of their surroundings. Between 10% and 30% of kids ages of 1 to 6 years have the eating disorder pica, which is characterized by persistent and compulsive cravings (lasting 1 month or longer) to eat nonfood items.

About Pica

The word pica comes from the Latin word for magpie, a bird known for its large and indiscriminate appetite.

Pica is most common in people with developmental disabilities, including autism and mental retardation, and in children between the ages of 2 and 3. Pica also may surface in children who've had a brain injury affecting their development. It can also be a problem for some pregnant women, as well as people with epilepsy.

People with pica frequently crave and consume nonfood items such as:

Pica is an eating disorder that can result in serious health problems, such as lead poisoning and iron-deficiency anemia.

Signs of Pica

Warning signs that a child may have pica include:

Why Do Some People Eat Nonfood Items?

The specific causes of pica are unknown, but certain conditions and situations can increase a person's risk:

Eating earth substances such as clay or dirt is a form of pica known as geophagia, which can cause iron deficiency. One theory to explain geophagia is that in some cultures, eating clay or dirt may help relieve nausea (and therefore, morning sickness), control diarrhea, increase salivation, remove toxins, and alter odor or taste perception.

Some people claim to enjoy the taste and texture of dirt or clay or other non-food item, and eat it as part of a daily habit (much like smoking is a daily routine for others). Pica may also be a behavioral response to stress.

Another explanation is that pica is a cultural feature of certain religious rituals, folk medicine, and magical beliefs. For example, some people in various cultures believe that eating dirt will help them incorporate magical spirits into their bodies.

None of these theories, though, explains every form of pica. A doctor must treat each case individually to try to understand what's causing the condition.

When to Call the Doctor

If your child is at risk for pica, talk to your doctor. If your child has consumed a harmful substance, seek medical care immediately. If you think your child has ingested something poisonous, call Poison Control at (800) 222-1222.

A child who continues to consume nonfood items may be at risk for serious health problems, including:

Medical emergencies and death can occur if the craved substance is toxic or contaminated with lead or mercury, or if the item forms an indigestible mass blocking the intestines. Pica involving lead-containing substances during pregnancy may be associated with an increase in both maternal and fetal lead levels.

Pica illustration

What Will the Doctor Do?

Your doctor will play an important role in helping you manage and prevent pica-related behaviors, educating you on teaching your child about acceptable and unacceptable food substances. The doctor will also work with you on ways to to restrict the nonfood items your child craves (i.e., using child-safety locks and high shelving, and keeping household chemicals and medications out of reach).

Some kids require behavioral intervention and families may need to work with a psychologist or other mental health professional.

Medication may also be prescribed if pica is associated with significant behavioral problems not responding to behavioral treatments.

Your doctor may check for anemia or other nutritional deficiencies, if indicated. A child who has ingested a potentially harmful substance, such as lead, will be screened for lead and other toxic substances and might undergo stool testing for parasites. In some cases, X-rays or other imaging may be helpful to identify what was eaten or to look for bowel problems, such as an obstruction.

Fortunately, pica usually improves as kids get older. But for individuals with developmental or mental health concerns, pica may continue to be problem. Ongoing treatment and maintaining a safe environment and are key to managing this condition.

Reviewed by: Mary L. Gavin, MD
Date reviewed: April 2014





Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.

© 1995-2014 The Nemours Foundation/KidsHealth. All rights reserved.





Bookmark and Share

Related Resources
Web SiteMental Help Net This site offers helpful content for those seeking help for addiction, eating disorders, and other mental and emotional troubles.
OrganizationNational Organization for Rare Disorders (NORD) NORD is a federation of more than 140 not-for-profit voluntary health organizations serving people with rare disorders and disabilities.
Related Articles
Childproofing and Preventing Household Accidents You might think of babies and toddlers when you hear the words "babyproofing" or "childproofing," but unintentional injury is the leading cause of death in kids 14 years old and under.
Failure to Thrive Sometimes kids don't meet expected standards of growth. Most still follow growth patterns that are normal, but others have "failure to thrive" - they fail to gain weight as expected and have poor height growth.
Lead Poisoning Long-term exposure to lead can cause serious health problems, particularly in young kids, so it's important to find out whether your child might be at risk for lead exposure.
Hunger and Malnutrition Even people who have plenty to eat may be malnourished if they don't eat food that provides the right nutrients, vitamins, and minerals.
Eating Disorders Eating disorders are common among teens and kids, especially young women. Read about the warning signs, prevention strategies, and ways to help a child with an eating disorder.
iGrow iGrow
Sign up for our parent enewsletter