Dear
Welcome to HCM
We understand your concerns
I went through your details. As you already knew,
Pica is characterized by an appetite for substances that are largely non-nutritive, such as paper, clay, metal, chalk, soil, glass, or sand. Pica is not only psychological but also physiological. Craving could be due to some nutritional deficiencies.
Before making a diagnosis of pica, the doctor will evaluate the presence of other disorders -- such as mental retardation, developmental disabilities, or
obsessive-compulsive disorder -- as the cause of the odd eating behavior.
If you could not detect any PICA related behavior in the child, the possible cause could
malnutrition or
anemia. Please advise his parents to consult a physician.
If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible.
Hope this answers your query. Available for further clarifications.
Good luck.