A UTI refers to any infection that happens within any part of the urinary system. It is a broad term that encompasses the urethra, bladder, kidneys, ureters, and all the linings and components that make up the urinary tract. In contrast, a bladder infection (also known as cystitis) is a very specific infection. It relates to the inflammation of the bladder and all the signs and symptoms that come along with infection in that area. While not all UTIs become bladder infections, they can certainly lead to them developing if they remain untreated for too long. It’s important to seek treatment for a UTI quickly to prevent the infection from spreading to other areas, such as your bladder and kidneys.