My boy (5years old) is having UTI and now has diarrhoea. I'm very worries because he is not having enough food

A. Your child is totally discomfited in the gut area also and plus then urinal or anal region is also getting affected because of loose motions UTI during this time it’s always good to try and give more liquids to the child which are going to be healthy you can give fruits you can give buttermilk coconut water you can give water with ORS or any other thing that would be comfortable for the child to have like soups and all