Summary: Disturbance of consciousness is impediment() of having an awareness of one's environment and one's own existence,sensations and thoughts. According to the degree of disturbance of consciousness,it can be divided:somnolence, confusion,stupor,coma.Summary： n Disturbance of consciousness is impediment(障碍) of having an awareness of one’s environment and one’s own existence,sensations and thoughts. n According to the degree of disturbance of consciousness, it can be divided: somnolence, confusion, stupor,coma