What is Hydrocephalus?

Thumbnail Image Credit: Ishi, Y., Asaoka, K., Kobayashi, H., Motegi, H., Sugiyama, T., Yokoyama, Y., Echizenya, S., & Itamoto, K. (2015). Hydrocephalus in idiopathic fourth ventricle outlet obstruction [MRI image]. Wikimedia Commons. CC BY 4.0. https://commons.wikimedia.org/wiki/Fi...