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In medicine, a coma (frae the Greek κῶμα koma, meanin "deep sleep") is a state o unconsciousness in which a person: canna be awakened; fails tae respond normally tae painful stimuli, licht, or soond; lacks a normal wake-sleep cycle; an daes nae initiate voluntary actions.[1]

Clessification an freemit resoorces
Specialty Neurology
ICD-10 R40.2
ICD-9-CM 780.01
DiseasesDB 16940
Patient UK Coma


  1. Weyhenmyeye, James A.; Eve A. Gallman (2007). Rapid Review Neuroscience 1st Ed. Mosby Elsevier. pp. 177–9. ISBN 0-323-02261-8.