Abnormal behavior: hyper-or hypoactive, walking on tiptoe, turning in circles, banging head, constantly holding a certain object or eating only certain foods, refusing to change fixed behavior.
五、行為異常：活動量過高或過低，踮腳尖走路、自己轉圈、撞頭等。手上固定拿著某種東西、只吃固定的食物、抗拒改變固定的行為等。