+Coma is a profound state of [unconsciousness](/wiki/unconsciousness), where an individual is unresponsive to their environment. This deep [sleep](/wiki/sleep) often results from significant brain injury or illness, leaving the person unable to be awakened.
+## See also
+- [Brain Injury](/wiki/brain_injury)
+- [Consciousness](/wiki/consciousness)
+- [Vegetative State](/wiki/vegetative_state)
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