Definition
When something like spots manifest on your skin.
（皮肤上）出现斑点等
In the summer, my skin tends to come out in spots when exposed to the sun.
夏天时，我的皮肤在阳光下容易出现斑点。
The allergic reaction caused me to come out in red spots on my arms.
过敏反应让我的手臂上出现红斑。
I often come out in small blemishes on my face when I eat chocolate.
我吃巧克力时，脸上经常会出现小瑕疵。