The nerve signals may be set off by stretching of the stomach or rectum. Functional abdominal pain usually happens in kids 4–16 years old. Sometimes, it happens after a gastrointestinal infection. It ...

A baby with a UTI may have a fever, throw up, or be fussy. Older kids may have a fever, have pain when peeing, need to pee a lot, or have lower belly pain. Kids with UTIs need to see a doctor. These ...