Possibly pica: Pica is the appetite for non-nutritive substances, such as paper, clay, soil, or metal. Certain criteria must be met for this diagnosis, such as duration of the symptom being at least one month. In an 18 year-old girl, it is possible that you may be iron-deficient, perhaps from heavy menstrual periods. It can also be seen in pregnant women. Your doctor can check iron and zinc serum levels.
Answered 12/4/2014
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