Assertion: narcolepsy's cataplexy | /r/HasProperty | the most specific symptom
Facets:
Source sentences:
text: Cataplexy is the most specific symptom that doctors use to diagnose because it appears in almost no other disorder.
text: Although none of the major symptoms are exclusive to narcolepsy, cataplexy is the most specific symptom and is rarely present outside of narcolepsy.