alteration of consciousness
coma
symptoms
UMLS_CUI:C0009421
ICD9CM_2005:780.01
An alteration of consciousness that is characterized by a deep state of prolonged unconsciousness in which a person cannot be awakened, fails to respond normally to painful stimuli, light, or sound, lacks a normal wake-sleep cycle and does not initiate voluntary actions.
UMLS_ICD9CM_2005_AUI:A0041160
SYMP:0000605