People Who’ve Woken Up From A Coma Have Shared Terrifying Insights Into What It’s Really Like

“When the brain swells as a result of trauma, the fluid pushes up against the skull,” WebMD has revealed. “The swelling may eventually cause the brain to push down on the brain stem, which can damage the RAS (Reticular Activating System). [This] part of the brain [is] responsible for arousal and awareness.”