expression, ichidan verb
be a handful; require a lot of care; be troublesome
Used for people (especially children, the elderly, or demanding individuals) who need constant attention or cause extra work for others. Often carries a slightly exasperated tone.
この子は本当に世話が焼ける。
This child is really a handful.
年を取ると世話が焼けるようになる。
As you get older, you start to require more care.