(for those who don't know, 'hydrocephalus' means an accumulation of cerebrospinal fluid in the head which causes the brain and skull to swell, and is common cause of brain damage with cognitive impairment, etc).
I've known several people who had it, 'hydrocephalus" and do very well in life. I knew a thalidomide kid who was the happiest kid, he put all of us with four complete limbs to shame as far as showing how spoiled we were. Then there are kids with heart problems, everywhere.