I liked this question. Children and even adult most of the time fail to explain their feeling. It is called rotational vertigo
, or disequilibrium.
Thus usually diagnosis is not made.
Ask your child ( I do not know the age of your child) does he feel like he is walking on the spongy bed? Your child might be having the problem of Peri-lymphatic fistula. it is a disease of Ears, where there is an abnormal connection between Middle ear, and Inner ear
. Middle ear has Air, and inner ear has fluid. The fluid from inner ear, leaks into the air filled Middle air, which gives these problems.
I would advise you to go to ENT Specialst, for the complete examination and management of ears. Does he has any history of trauma? Does he has any other symptoms of ear fullness, tinnitus
I would like you to give me feedback.