Hydrocephalus Quistions?????

im getting headaches and absence seizures because iof hydrocephalus. how does hydrocephalus increase? i have dandy-walker syndrome and thats whats causing the hydrocephalus.if the hydro keeps increasing,what will happen to the headaxches and seizures? what medidicnes(if any) will lower/raise the hydro? i dont have a shunt yet,and i do make myself throw up.(gross,i know).