Before I Dr. Google it, I wanted to see if anyone had this happen before. I noticed yesterday on my daughter thumb, that her skin is dry and cracked and a little red. It is on the skin side of her thumb from her knuckle up. Is this normal? I want to put coconut oil on it to see if that helps. She only sucks her thumb to go to sleep and then she spits it out before she gets in a deep sleep. Thanks!