Assertion: narcolepsy's sleepiness | /r/CapableOf | become severe
Facets:
value: often
type: TEMPORAL
Source sentences:
text: The excessive daytime sleepiness and cataplexy often become severe enough to cause serious problems in a person's social, personal, and professional life.
text: The excessive daytime sleepiness and cataplexy often become severe enough to cause serious problems in a person's social, personal, and professional life.