Health Questions and Answers

Question: What causes coma?

Answer:

Mental alertness is maintained by the cerebral hemispheres in conjunction with the reticular activating system. Coma can be produced by diffuse disease of both cerebral hemispheres (usually a metabolic problem), disease in the brainstem that damages the reticular activating system, or a structural central nervous system (CNS) lesion that compresses the reticular activating system.

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