突発性発疹 とっぱつせいほっしん Also written とっぱつせいはっしん Meanings Noun roseola; exanthem subitum; roseola infantum; sixth disease; three-day fever Kanji 突 thrust. Read as トツ. 発 emit. Read as ハツ. 性 nature. Read as セイ. 疹 measles; sickness. Read as シン. Word lists Medicine Jinuma: Japanese Dictionary · Word lists