sudden illness
急病かも
It might be a sudden illness.
— 暗殺の森 (1971)
彼女が急病だとか急病？
Did you say she’s suddenly sick? Suddenly sick?
— 紅夢 (1991)
急病のために彼はそこへ行くことができなかった。
He couldn't go there because he suddenly fell ill.
三奥様が急病です
Mrs. Mitsu is seriously ill.
リンダ父親の急病で大学から呼び出された。
Linda was called away from college because her father suddenly fell ill.