Assertion: coma | /r/HasProperty | characterized by gradual onset
Facets:
value: with stages of lethargy
type: OTHER
value: with stupor before true coma
type: OTHER
Source sentences:
text: Stroke, a rupture or blockage of vessels supplying blood to the brain, can cause sudden loss of consciousness in some patients, while comas caused by metabolic abnormalities or cerebral tumours are characterized by a more gradual onset, with stages of lethargy and stupor before true coma.