Why does my baby cry when she pees?

It hurts!: Something called bubble bath urethritis -- tender inflammation of the sensitive lining where urine exits, caused by bubble bath or bath soaps w/ fragrances or other chemicals -- is a common cause. Ouch! another possibility is a urinary tract infection, especially if other symptoms. A urine test can check for this. Utis are more common in boy babies. Many babies with utis don't cry when they pee.

Possible infection: A baby should not cry when urinating. A visit to your pediatrician is needed to examine for external irritation such as a diaper rash or yeast infection. A urine sample may be taken to check for a urinary tract infection.