When she does this it's a coping mechanism. She is so young and she has not yet mastered vocabulary and her emotions. She understands that she doesn't like the way she is feeling, she can't tell you, and it frustrates her. Children do the same this when they are tired sometimes as well. They will hit their head on the crib to sooth themselves, and older children will sometimes stroke their hair to fall asleep (my 2 year old son does this.) . What you can do when she does this is just to kneel down close to her level, give her a hug and tell her you understand how she feels, and that she must be having a tough time right now. Suggest a fun activity. Pick her up, cuddle her a minute and say, "How about some finger painting?" Take this as a sign of her intelligence, she can recognize a bad feeling and she tries to expel it so she can be happy again. I hope this helps!
at 9:37 AM on Sep. 28, 2009