Off-topic, but I'll never forget the undignified SNORT that came out of our ordinarily placid, extremely well-trained allergist's mouth when I noted once that "continuous" impairment was sometimes a barrier with schools since "breathing" impairment wasn't a continuous limitation, nor was cardiac arrest. (Ergo, self-care was our preferred angle for maintaining 504 status, and still is, incidentally.)
He rolled his eyes, snorted, and said "Uh-- does 'not breathing' or 'cardiac arrest' really NEED to be continuous to pose a problem?" (Said in a "are there REALLY people this stupid in charge of children?" tone.)

I know, rather black humor, that, but it still makes me laugh when I think about it. Pithy allergist. We like him very much. LOL.