我们常常可以看到一些小孩好吃一些非食物性的东西,如泥土、墙皮、煤渣、纸片、烟头、火柴、沙子、手指甲等。有的特别喜欢闻某种特殊气味。这种现象医学上称为异食癖。由于常见于小儿,故称小儿异食癖。患有异食癖的小儿多表现出食欲低下,偏食及营养发育状况低下、贫血等。这种小儿多在学龄前期,又尤以 We often see some children eat something non-food, such as dirt, plaster, cinder, paper, cigarette butts, matches, sand, fingernails and so on. Some especially like to smell a special smell. This phenomenon is medically known as pica. As common in children, it is called pediatric pica. Children with pica appear more low appetite, partial eclipse and nutritional development is low, anemia and so on. This kind of children mostly in preschool, especially