A: I just can’t stand Dean’s voice, so everything he says gets under my skin.

B: I know he’s bothersome, but don’t let him get under your skin.

Note: This idiom, common in the United Kingdom, means “to become a source of irritation,” as if the object was an irritant lodged under the skin that the person could not refrain from scratching. It may not necessarily be painful but will completely preoccupy the person. It can also mean “to be a source of obsession.”