As the name suggests, urinary tract infections (UTIs) are infections that affect the urinary system. They can impact a part of the system or the whole of it. In most cases, a bacterium called Escherichia coli causes UTIs, leading to frequent urination, pain or burning sensation when urinating, pain in the lower back or side, and other symptoms. Most UTIs are easily treatable with simple home remedies and lifestyle changes. Causes The urinary tract is self-sufficient in preventing and fighting off infections. It kills most bacteria and prevents diseases from developing. However, the tract’s security system sometimes misses a microbe, causing an infection. The bacteria enters the system through the urethra, spreads into the bladder, and grows. UTIs are commonly seen in women and generally affect the urethra and the bladder. The urethra’s proximity to the anus makes it easier for bacteria to make its way into the urinary tract. While UTIs are most commonly caused by Escherichia coli or E. coli, they may result from other bacteria too. If left untreated, it can lead to other complications. Symptoms UTIs might not always show signs or symptoms, making diagnosis difficult during the early stages. However, the following signs may sometimes occur: