Rett's Disorder (氏疾患)

A. All of the following (所有以下現象):
(1) apparently normal prenatal and perinatal development
出生前後的發育明顯正常;
(2) apparently normal psychomotor development through the first 5 months after birth
出生的頭5個月的精神和運動發育明顯正常;
(3) normal head circumference at birth
出生時的頭圍正常
B. Onset of all of the following after the period of normal development:
在正常發育期後以下所有異常開始發生:
(1) deceleration of head growth between ages 5 and 48 months
在五到48個月期間頭部增長開始下降;
(2) loss of previously acquired purposeful hand skills between ages 5 and 30 months with the subsequent development of stereotyped hand movements (e.g., hand-wringing or hand washing)
在5到30個月期間,以前所獲得的自主的手部捕技能消失,取而代之的是不自主的刻板運動;
(3) loss of social engagement early in the course (although often social interaction develops later)
與人的交流能力丟失
(4) appearance of poorly coordinated gait or trunk movements
軀體運動協調性變差
(5) severely imapired expressive and receptive language development with severe psychomotor retardation
語言的表達和理解能力嚴重障礙,並伴隨精神運動係統發育的嚴重延遲