The main difference between deep and shallow coma is the degree of response to external stimuli, where both deep and shallow coma belong to the type of consciousness disorder, which is manifested by loss of consciousness and no voluntary activity. In shallow coma, the patient responds to stimuli, and can respond to minor painful stimuli, while the patient’s deep and shallow reflexes are present and the vital signs are relatively stable. In deep coma, the patient does not respond to any stimulus, and the deep and superficial reflexes are absent, and the vital signs are unstable. The determination of deep and shallow coma can also be clinically determined by the Glasgow Coma Score. If the patient’s score is < or = 7, he or she is in a shallow coma. If the patient has a score of 3, the clinical one is considered deep coma. For deep and shallow coma, the cause should be actively investigated and the patient should be given active treatment.