Refers to a sudden outburst of anger or irritability, often used for children's tantrums but also for adults losing their temper.
The child threw a tantrum and screamed.
He flies into a rage over little things.
hot-tempered person; person with a short fuse
Standard kanji spelling.
Kana spelling is common in everyday writing, especially when the kanji are considered difficult.
The kanji 癇 and 癪 both relate to illness or spasms, reflecting the historical view of tantrums as a kind of fit. The exact derivation is uncertain, but the word has been used since the Edo period.