Yes, there is a disease that almost no one in the world truly understands. And the sufferers endure horrific torments. No, it's not cancer. I wish it were cancer. Believe me, that would be so much more peaceful... This disease is not only unknown to societies and random people on the street, but also to the medical community.
No pain in the world can describe this hell. This is a disease where you can't decide what to think. Fear is a constant threat at the back of your mind. The possibility of things going wrong is real and tangible. This is a philosophical disease. The more intelligent you are, the harder it gets.