We’re now posting a question every day. Follow the @Figure1Questions account for a daily opportunity to test your knowledge. An 8-year-old male presents with constipation after eating pebbles at school. He has normal vital signs and a normal abdominal examination. A flat plate abdominal X-ray demonstrates innumerable 1-2 cm round opacities overlying the small and large bowel. Which of the following conditions predisposes a patient to pica? Image credit: @BabyDocKJ.