ear infections can make you off balanced. My daughter we found out this year has very low vision in her right eye and that makes sence re: her tripping, hitting walls etc.

BUT

Also he can just be clumsy LOL my cousin who's 25now at a 3-8age would be sitting on a chair and just fall off! lol She to this day can not 'run' up the stairs without tripping, she yells out "im ok" and we laugh. She spills cups at dinner, drops things, knock things over, even walking stumbles LOL She had very curly hair so as a child we called her "curley sue" (the little girl in the movie was the same way!)