break out in
phrasal verbbreak out in something
- to suddenly be affected by an unpleasant feeling or problem on your skin
皮肤上突然出现 - Her face broke out in a rash.
她脸上突然长出一片红疹。 - He broke out in a cold sweat (= for example, through fear).
他突然冒出一身冷汗。
- Her face broke out in a rash.