1. There was a person.
2. This person
was vulnerable to a certain kind of disease.
3. This disease is a kind you won't usually find in a medic's handbook.
4. It caused this person, eventually, to move far from this person's home place.
5. That person did not die because of the disease, as far as we know.
I see Queen Beruthiel of Gondor and maybe her disease was catomisia?! She loathed cats and because of all the stuff she did with the cats and her strange way of acting she was sent far away from he home place.