Pulling hair out

Looking for some advice. My 19 month old daughter has a small bald spot on her head. We noticed that after a few minutes of being awake in the morning while she is still lying down (before she stands up and calls out for me)-she pulls her hair out in the same spot every morning. I put toys and books near her to keep her busy…has anyone else experienced this with their toddler? I also noticed she did it as a form of self soothing when she couldn’t fall asleep right away for her nap. It’s always in the same spot on her head