Brains are weird. They use billions of complex, interconnected nerve cells to make sense of the vast amount of sensory information we are bombarded with every second of every day, and let us become self-aware and conscious. Yet it doesn't take much to confuse them—and when things go wrong, they can go really wrong. Ever felt worms crawling through your skin or found yourself sexually aroused 24/7? Ever woken up and all you could speak is Polish (and, you're not from Poland)? Read on to find out what other weird neurological diseases seem too crazy to exist, but actually do.
