Could it be spd?
I found your website while doing research for a paper for a class I am taking, while reading through the symptoms for SPD, I noticed that my 5 year old son fit into a few categories. He is very overactive, figgits, squirms, cannot seem to sit still, jumps on the furniture off the furniture is constantly in motion(pretty much everything in the hypo sensitivity to motion category) loves bear hugs, squishy hugs(sensory seeking category) has attention problems in school and at home.
He also has issues with socks, and has to pull them on as tight as possible before I can put shoes on him or he complains that his sock is hurting him and will cry if I don't take it off. He has issues with loud noises especially in a movie theater, and chews on his clothes.