<prompt> Pagophagia involves eatingIceSandClaySalt  <response>: Pica is defined as persistent eating of nonnutritive substances.It is identified only when medical problems such as intestinal obstruation, intestinal infections or poisoning arises lead. among adults, ceain foods of pica, including geophagia clay and amylophagia starch, have been repoed in pregnant women. Ref: Synopsis of Psychiatry, 11e, pg 1206 