The most common cause of urinary tract infections (UTIs) in children is a bacterial infection, usually caused by Escherichia coli (E. coli). UTIs in children occur when bacteria enter the urinary tract, typically from the digestive system. This can happen during sexual intercourse or when the child wipes from back to front after using the toilet. Other risk factors for UTIs in children include urinary tract abnormalities, vesicoureteral reflux, obstruction of the urinary tract, delay in toilet training, and poor hygiene. UTIs in children can be painful and can cause fever, frequent urination, and burning sensations during urination. It is important for children to practice good hygiene, including wiping from front to back after using the toilet and urinating after sex, to reduce the risk of UTIs. If your child is showing signs of a UTI, it is important to seek medical attention as soon as possible to prevent more serious complications.