Why is there に in 頭痛に障る？


> ……溜息をつくだけでも、頭痛に障る…。

Is there an explanation for this に or is it just like 触る which can be used
with both に and を ?




障る is an uncommon **intransitive** verb which is used in the form ～に障る and
means "to do harm to ～", "to negatively affect ～" or "to disturb ～." Unlike
触る, there is no transitive usage "～を障る". (～の)気に障る is a relatively common set
phrase that means "to annoy/irritate someone."

>   * お酒を飲みすぎると健康に障りますよ。
>   * 連日の徹夜は体に障る。
>   * 気に障ったら申し訳ありません。
>   * 明日の仕事に障るといけないので、今日は帰ります。
>

So 頭痛に障る should mean "my (chronic) headache will be worsened (only by
sighing)". I think this usage is fine, but as l'électeur said in the comment,
～に障る is much more commonly used with generic words like 健康.




障る is an uncommon **intransitive** verb which is used in the form ～に障る and
means "to do harm to ～", "to negatively affect ～" or "to disturb ～." Unlike
触る, there is no transitive usage "～を障る". (～の)気に障る is a relatively common set
phrase that means "to annoy/irritate someone."

>   * お酒を飲みすぎると健康に障りますよ。
>   * 連日の徹夜は体に障る。
>   * 気に障ったら申し訳ありません。
>   * 明日の仕事に障るといけないので、今日は帰ります。
>

So 頭痛に障る should mean "my (chronic) headache will be worsened (only by
sighing)". I think this usage is fine, but as l'électeur said in the comment,
～に障る is much more commonly used with generic words like 健康.

