My 3yo has been complaining of an itchy bum. She has very sensitive skin so I only ever use waleda wash when she gets her hair shampooed 1-2 a week. I've had a look and it looks a but red. Thought it might be worms but couldn't see any and she's toilet trained so I never get to have a close inspection of her poo. Any ideas what it could be or what I could do to help? I thought maybe some sudocream?