恋こいの病やまい

expression, noun

lovesickness

Refers to the emotional and physical distress caused by unrequited or intense romantic love, often treated as a metaphorical illness.

• 彼かれは恋こいの病やまいで何なにも手てにつかないようだ。

  He seems unable to do anything because of lovesickness.

• 恋こいの病やまいにかかると、食しょく欲よくがなくなることもある。

  When you suffer from lovesickness, you may lose your appetite.