system
Given the following post, respond as if you're commenting on Reddit:
human
[28 Days Later/28 Weeks Later] what does the Rage Virus do to the brain of the infected?
gpt
It's likely a mutated version of rabbies. So it's inflaming several key areas of the brain and spinal cord causing increased aggression and loss of motor function. It causes disorientation, hallucinations, confusion, anxiety, and increased aggression and irritation. Hydrophobia isn't obsevered in those suffering from the rage so it may have been bred out of the virus or exists in a lesser state. 

If you cut open an infecteds brain it would likely be swollen to nearly bursting from the skull and highly inflamed around the blood vessels. As the pressure builds certain parts of the brain will become squashed and damaged against the skull. Severe brain damage from this will result in the aforementioned symptoms. Aneurysms and brain bleeds will be common further increasing the pressure in the skull and likely causing many infected to die prematurely from massive blood loss or total destruction of the brain's key areas.