异嗜症或称异食癖(pica),是指婴儿和儿童在摄食过程中逐渐出现一种特殊的嗜好,对通常不应取食的异物,进行难以控制的咀嚼与吞食。发病年龄以幼儿为多,但学龄儿童亦可见到。 病因 关于异嗜症的病因至今尚无定论。有人认为是一种心理失常的强迫行为,往往与家庭环境不正常有关。初期可因无人照顾,擅自摄取异物,日久成为习惯,变 Psoriasis, or pica, is a term in which babies and children develop a particular hobby that involves the uncontrolled chewing and swallowing of foreign objects that should not normally be eaten. Age of onset to more children, but school-age children can also be seen. Etiology About the cause of stroke is still inconclusive. Some people think that it is a psychological disorder of compulsion, often with the abnormal family environment. Early due to no one take care of unauthorized intake of foreign matter, as time becomes a habit, change