I'm not sure if it will be answered here, or if this is the right place since it's mostly medical in nature, but here goes: I'm working on a fanfic that would involve a character contracting a terminal illness. I need to find the disease that would fit the premise, and would likely dictate the story direction.
a) The character discovers he has a terminal illness at the beginning of the story.
b) He keeps this a secret, and would either seek treatment, or not do anything so as not to arouse suspicion since it would drastically change his lifestyle.
c) A year or two later, his condition worsens, and he dies at the story's end.
I was thinking of either brain or lung cancer, but am inclining more to secondary brain tumor originating from the lung. (I picked this up from Wiki).
Here are the conditions/questions that would define a bit what I'd want to come up with:
1) The disease should not drastically affect his lifestyle or appearance. The character is a racer, if it's of any relevance.
2) Illness should progress slowly, and will not show a too much (or too obvious) symptoms, not until ten to twelve months. It's important that he manages to keep things under wraps for about a year.
3) Then after that year (or two), his sickness would progress to terminal that it would be incurable, thus, he dies at the end.
These conditions can be slightly altered, except that the onset of the obvious symptoms should show up about after a year. I'll likely have other questions, but this is the groundwork thus far. So is there such an illness that could be incorporated in the story? Would it work?