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Definition Return to top
Pica is a pattern of eating non-nutritive substances (such as dirt or paper), lasting for at least one month.Causes, incidence, and risk factors Return to top
Pica is seen more in young children than adults, with 10-32% of children aged 1 to 6 exhibiting these behaviors.
Pica can occur during pregnancy. In some cases, specific nutritional deficiencies, such as iron deficiency anemia and zinc deficiency, may trigger the unusual cravings. Pica may also occur in adults who crave a certain texture in their mouth.
Symptoms Return to top
Pica is the eating of non-food substances. Clay, dirt, ice, sand, animal feces, paint, and hairballs are just a few examples of what children and adults with pica have been known to eat.
Signs and tests Return to top
There is no single test that confirms pica, but because pica is associated with abnormal nutritient levels and in some cases malnutrition, blood levels of iron and zinc should be tested.
Hemoglobin can also be checked to test for anemia. Lead levels should always be checked in children who may have eaten paint or objects covered in lead-paint dust. The presence of infection may be detected if contaminated soil or animal waste is being ingested.
Treatment Return to top
First, any nutritional deficiencies and other medical problems, such as lead toxicity, should be addressed.
Treatment emphasizes psychosocial, environmental, and family guidance approaches. Other successful treatments include mild aversion therapy (associating the pica behavior with bad consequences or punishment) followed by positive reinforcement for appropriate eating.
Medications may help reduce the abnormal eating behavior, if pica occurs in the course of a developmental disorder such as mental retardation or pervasive developmental disorder.
Expectations (prognosis) Return to top
Treatment success varies. In many cases, the disorder lasts several months, then resolves spontaneously. In some cases, it may continue into adolescence or adulthood, particularly when associated with developmental disorders.Complications Return to top
Calling your health care provider Return to top
Call your health care provider if you notice that a child (or adult) has a persistent tendency to eat non-nutritive substances.Prevention Return to top
There is no specific prevention. Adequate nutrition may be helpful. Update Date: 5/4/2004 Updated by: Ram Chandran Kalyanam, M.D., Department of Psychiatry, Western Psychiatric Institute and Clinic of the University of Pittsburgh Medical Center, Pittsburgh, PA. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |