Did you know you can be allergic to both your own tears and shower water? You can't even cry about how dirty you are from not being able to shower… it’s cruel.
And on the flipside, the so called "sweating sickness" will cause you to die within a few hours of contracting it, and no one has any idea why.
Have you heard of Kuru? It causes holes to appear in your brain, but it can also cause sufferers to burst into uncontrollable laughter. I mean, what’s funny about holes forming in your brain? Again, another twisted and currently unexplainable disease.
For more messed up and bizarre diseases that science has yet to explain, check out the video below.