Why the docs don't share more info I can't say, but
most narcoleptics are totally ignorant of the fact that the sleepiness of narcolepsy is only a symptom of the underlying endocrine disorder, and only one symptom at that.
Perhaps
most irritating of the lot, however, is Rowan Atkinson with his portrayal of a
narcoleptic Italian (it's a good job he eventually tells you what his nationality's supposed to be, because you certainly can't guess from the accent).