Fun fact, a man had the liquids in his brain swell up to the point of leaving the brain as a spread out layer on the walls of his skull.

Despite this extreme disfigurement of his brain, he had a job, a family with multiple kids, and the only possible side effects of 70 IQ (which wasn’t even proven to be because of this) and a twitchy leg, which went away when they drained the pressure from the fluid.