text: 2 1/2 years old child, when she walks her legs shakes, hip also shakes and she puts her neck often down?   it' might be a seizure...have it checked out...you might wanna get her an mri but make sure she has no ear piercings or metal objects on her cuz that machine is a big magnet...you can opt for a ct (catscan)...but yeah if it is a seizure...it might be something in the brain...didnt mean to scare you...also though she might just be learning how to balance...is her head big? too big for her body to support? my brother and  i had that same problem...we just had too big of heads for our bodies to support