Coma

**Definition:** A profound state of unconsciousness associated with depressed cerebral activity from which the individual cannot be aroused. Coma generally occurs when there is dysfunction or injury involving both cerebral hemispheres or the brain stem RETICULAR FORMATION.

**Tree numbers:** - C10.597.606.358.800.200 - C23.888.592.604.359.800.200

**Synonyms:** - Comatose