By the way I did a little reserch on water on the brain. Here a little bit of what I found.
Hydrocephalus At A Glance
* Hydrocephalus is an abnormal accumulation of cerebrospinal fluid (CSF) in the brain.
* The CSF in hydrocephalus can compress and damage the brain.
* Hydrocephalus can occur before or after birth.
* In infants, the key sign of hydrocephalus is an abnormally large head.
* In older children and adults, symptoms of hydrocephalus include headache, nausea, vomiting, and blurred vision.
* Treatment of hydrocephalus involves surgical insertion of a shunt to allow drainage of the excess CSF and relieve the pressure on the brain.
Sorce
http://www.medicinenet.com/hydrocephalus/page3.htm#canhydro
I did not read anything about it being fatil, but if your friend has other medical probums, those might complicat things.
If you what to learn more I suggest you go to google and type in water on the brain.
Hope that helps.
wave
I'll keep praying.