Hi , I have an almost 3 year old toddler. For the last few months he constantly itches his inner bum. He doesn't have worms and I have checked with the doctor nothing. He is still In pants diapers and is undergoing potty training. When he wears his diapers he itches his bum but when he is wearing his underwear he doesn't itch much. When we do potty training he washes but how to get rid of this itching and also I have tried a lot to teach him potty training so he has gone a few times to the bathroom to pee but not poop , I have explained but he doesn't seem to get it. Please help with suggestions 🙏