go sick informal
report sick

Not me though, only went sick when I couldn't stand covering from them any longer.

He went sick in September and had not returned to work since.

But I think now you're probably right about the skipper going sick in the head.

Court went sick as the import of the words struck home.

Perhaps he could arrange for Anthony to go sick at the last minute.

But his heart, gone sick, was not in this, what should have been delightful, tour.

"We can't have another player going sick at the very last moment!"

The country gone sick, that's why we are different from Europe.

She went sick for a time, but she's supposed to be better now.

He said that his partner had gone very sick.