Hello, My 3.5 year old daughter has what i describe as tremors on occasion, only while sleeping. She had this happen again early this morning. Her leg and arm on the right side of her body shake, along with her stomach. She seemed to be waking up when this happened, because she said out loud mommy, I m trembling. She stops right away when I fully wake her. She told me that there were polka dots filled with special water on her right foot that makes her tremble, and that her bones make her stop trembling. Also, she said it doesn t hurt, but tickles when this happens. Any ideas?