When ever i eat a doughnut i always tear off a piece of the dough and rolls it in between my fingers.what is this called.is it considered pica.

Pica: I would say this is more of a habit. Pica is the term for the ingestion of non food items.

No: Pica is eating non-food in an attempt to correct some deficiency. Usually it is described as eating dirt or mud to get missing minerals, or due to other reasons. It has been described with people eating paper, clay, metal, chalk, soil, glass, or sand.

No.: A pica is an uncontrollable craving for some food or substance. Your behavior is a "habit." No big deal if it does not apply to lots of other behaviors that you have that may interfere with normal activities of living or affect your relationships.