Pica

Pica is a condition where a person eats non-food items such as dirt, clay, or paper. It primarily affects the digestive system because these substances are not meant to be ingested and can cause problems like blockages or infections. This behavior is often linked to nutritional deficiencies, especially iron or zinc deficiency, which can affect overall health. Children and pregnant women are more commonly affected by this condition. The habit can lead to serious complications including poisoning or damage to the intestines. Understanding and identifying this behavior is important for preventing harm and addressing underlying causes.

Pica is defined as the persistent eating of non-nutritive, non-food substances for at least one month, inappropriate to the developmental level of the individual. It is often caused by nutritional deficiencies such as iron deficiency anemia or zinc deficiency, but can also be associated with mental health disorders like autism spectrum disorder or schizophrenia. The core pathology involves a compulsive craving and ingestion of substances like soil, chalk, or paper, which can lead to gastrointestinal complications such as obstruction, perforation, or parasitic infections. It is clinically significant due to its potential to cause toxicity, malnutrition, and social stigma. Diagnosis requires careful history taking to distinguish from culturally accepted practices and to identify any underlying medical or psychiatric conditions.