hi , could it be possible to have hydrocephalus without these symptoms: urinary frequency , vomiting and acute headaches ? im 17y male and my head circumference is larger than average at (95%) percentage , i feel like that my head is really heavy like a blowing ball , i always feel tired and sleepy , i feel that my neck can't hold my head up i just want to lay down my mental powers is good I'm doing good at school , my IQ is above average but my reactions and movements are very slow., I've been getting these symptoms since i was kid ,it didn't bother me, but now i feel like its getting worse, more visible and disturbing. I've done blood test to check if its anemia but the results were negative, everything is at normal level. Should i ask for CT scan ? I'm planning to visit a neurologist but I'm afraid he won't ask for the scan ? Thank you for reading.