Anyone who would potentially be in a position to help me should I suddenly collapse or suffer a life threatening injury. What could happen should my medical records (a little high blood pressure) fall into the "wrong" hands?
I'm not saying you shouldn't disclose that information, I'm saying that you shouldn't be put in a position where you are forced to in order to obtain insurance or a job...
Many of the HR sites I've looked at have suggested that no medical questions should be asked during the interview and not until the initial letter of offer has been given. Then a full disclosure of medical needs can be provided if any special workplace accomodations need to be made.