What is pica ? Pica is a psychological disorder characterized by a persistent and compulsive craving to eat non-food substances, such as: 1. Dirt or clay 2. Chalk or plaster 3. Paper or cardboard 4. Hair or fabric 5. Stones or pebbles 6. Paint or glue 7. Starch or cornstarch People with pica may eat these substances regularly, often in large quantities, and may experience feelings of anxiety or stress if they are unable to consume them. _Causes of Pica:_ 1. Nutritional deficiencies (e.g., iron,