A chronic disorder of the nervous system characterized by involuntary jerky movements of the face, tongue, jaws, trunk, and limbs, usually developing as a late side effect of prolonged treatment with antipsychotic drugs.迟发性运动障碍：一种神经系统的慢性紊乱，其症状表现为脸部、舌头、下颌、躯干和四肢不自觉的抽搐，通常是由于长期服用精神安定剂而引发的迟发性的负作用造成的