WordNet records no synonym and no antonym for status epilepticus. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a condition in which there are continuing attacks of epilepsy without intervals of consciousness; can lead to brain damage and death
Synonyms, antonyms and the broader and narrower relations for status epilepticus come from Princeton University’s WordNet. Full sources and licences.