illness; disease
恋の病に薬なし。
There is no cure for lovesickness.
病は気から。
Your state of mind affects your health.
だから彼の妄想の原因は―心の病とされた
Therefore, the cause of his delusions was attributed to mental illness.
— 嵐の中で (2018)
惚れた病に薬なし。
There’s no cure for being in love.
私も同じ病にかかっています
I have the same illness.
— The Wind Rises (2013)
病は気からとはうまく言ったものですね。
They say it well: “Your state of mind can make you sick.”