How can I stop my daughter from eating wall paint?

Q: My 14 years old daughter scrapes the walls and eats the paint. Mistaking this for a case of calcium deficiency, the doctor prescribed calcium supplements. Even after taking these supplements for 2 years, my daughter's habit remains the same. Please give me a solution.

A:This is sometimes seen in young infants but rarely in 14 year olds. She would need a full evaluation including a psychological evaluation, by a child psychologist or a psychiatrist.