An uropathogium refers to a type of microorganism, particularly a bacterium, that causes urinary tract infections (UTIs). These pathogens can invade the urinary system, leading to symptoms such as pain, frequent urination, and discomfort. Common uropathogens include Escherichia coli, Klebsiella, and Proteus species. Understanding uropathogens is essential for diagnosing and treating UTIs effectively.