what is coma?

what is coma? coma is a severe disorder of consciousness in which the patient's awakening state, content of consciousness, and voluntary movement are severely lost. coma patients cannot recognize themselves and their surrounding environment, have poor or no response to external stimuli, have no eye-opening movements, spontaneous speech movements, rare spontaneous limb movements, normal physiological reflexes, weakened or disappeared, and stable or stable vital signs. unstable.