Ok, but since it's a very real medical condition, why not lead with "I have Atypical Cystic Fibrosis, so I can't do X", instead of being all mysterious about it?
You can't really blame humans for being curious when you stoke but deliberately choose not to satisfy their curiosity.
I mean, HN specifically wants you to post "anything that gratifies one's intellectual curiosity". I don't know about others, but my intellectual curiosity certainly isn't gratified when someone leads with "I have a condition" but then gets all squirrelly about what it is.
If you tell people what your condition is and they don't take it seriously, that's their problem. If you don't tell what it is, it might be "a mild fear of puppets" for all I know. Unfortunately there are people that make up medical conditions for themselves, so you can't really expect everyone to just automatically accept "I have this condition" as an excuse for any behavior. For example, I've taught a number of students that made up conditions for themselves right at the moment their homework was due.