DS1’s top lip goes pale when he sleeps. I think it’s always been like this - I certainly remember it when he was 3 or 4 and he’s 7 now. I’d never thought anything of it until a friend’s child was recently diagnosed with a heart defect and they said pale lips was one of the signs they spotted.
Is this something to ask questions about or is this a normal thing for some people when they are asleep? Just wanting to gauge how normal this is. Thanks!