My 20 month old daughter has always sucked her fingers since just a few weeks old. She never took a dummy. Now her fingers are almost constantly in her mouth. I worry about her teeth, but also noticed recently that her fingernails on the 2 fingers she sucks are really distorted and she has white skin bits (like when you have wet shoes on) around those fingers.
Is there anything I can do about this? She mostly takes fingers out if we remind her, but they are then straight back in within seconds.