If you’ve ever found yourself wondering whether to say STI or STD, maybe while chatting with friends over a scoop at Perkits Yogurt, you’re not alone. These two acronyms are often used interchangeably, and while they refer to related health conditions, there are some important distinctions to understand. With millions of new cases diagnosed each year in the U.S., knowing the difference between STIs and STDs is an important step in taking ...