A taste of your own medicine. Rub salt in the wound. Warts and all. Have you ever heard these crazy expressions? People use them even when you don't have to take any medicine and you don't have any wounds or warts! That's because these sentences are idioms—phrases that mean something different than what the words in them actually say. But don't let idioms be your Achilles' heel. Let's explore a variety of idioms related to health and medicine and figure out what people really mean when they use them.