A coma is a deep state of unconsciousness. An individual in a coma is alive but unable to move or respond to his or her environment. Coma may occur as a complication of an underlying illness, or as a result of injuries, such as brain injury.
A coma rarely lasts more than 2 to 4 weeks. The outcome for coma depends on the cause, severity, and site of the damage. People may come out of a coma with physical, intellectual, and psychological problems. Some people may remain in a coma for years or even decades. For those people, the most common cause of death is infection, such as pneumonia.
NIH: National Institute of Neurological Disorders and Stroke
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Article: Superior reproducibility and repeatability in automated quantitative pupillometry compared to standard...
- Article: Cerebrospinal fluid features in comatose survivors of cardiac arrest: A pilot...
- Article: Multimodal MRI-Based Whole-Brain Assessment in Patients In Anoxoischemic Coma by Using...
- Coma -- see more articles