HI,
Think balance...sports are rough sometimes. Nature, the woods, a quiet pond, are balanced and harmonious. Try spending time in the most peaceful place you know. Let your child have as much freedom as is safe...freedom to climb trees, hunt crawfish in a creek, pick dandelions. Nature can do wonders, even miracles.
Then if I were you I would start looking at diet. Natural foods, natural herbs. Mother Earth really does know best. Take an herb walk with a local herbalist, learn what herbs are nearby that heal. Let your kids eat sourgrass, clover blossoms, and plaintain.
There are many good books that talk about this..."The last Child in the Woods" speaks to the scientific findings about childhood disorders and the disconnections from nature.
Go back to nature everything is good there.
Peace,
Jas