OMG!!! We have these issues. We have been diagnosed w/ vestibular occular dysfunction (which the PT described as your central control and if it is off, everything is off...balance, diet, stomach problems, motion sickness, etc). Getting PT is the answer and I would recommend that you get in as soon as you can and get as much of it as you can. Sometimes you can get through the school system, or a state program if your insurance won't pay for it. We have never been able to get insurance coverage because they consider it a developmental problem. My DS also could not recoginze colors, shapes, or letters until he was 5, 6, & 7 years old , depending on the task. I started working w/ him when he was 4 and it took until he was 7 before he could recognize a letter and name it from memory and a little longer before he could write it from memory. He could not even do something as simple as COPY a letter! It was so frustrating!!!! Some of these issues are due to visual perception/processing/memory skills, my DS also has been diagnosed with eye teaming and tracking problems and spatial difficulties. AT age 9 he still can not tie shoes, ride a two wheeled bike, play baseball very well (or any sport), etc, etc, You probably know what I mean.
Any ???'s please post.