Ds is 6 months. He often has cold hands and feet when the rest of him is warm... When he swims his hands go purple but I understand this is normal as long as lips don't go blue.
However I've now noticed his middle finger sometimes goes completely white when the rest of them are red. It's as if there's something wrapped around it cutting off blood supply but there's nothing there. I rub it a bit and it goes ok again.
Is this normal?