You might want to search some of the discussions on this site about dysgraphia. There are several.
I just finished watching a "webinar" called "Dyslexia and Writing Challenges in Gifted Children" put on by Drs. Brock and Fernette Eide. I have never thought my son was dyslexic - he reads non-stop, but he does have dysgraphia. Their talk made me look at both of these labels differently. These are the people who wrote "The Mislabeled Child." Personally, I think a lot of 7 year old boys would not be expected to write a lot, but if the problem persists, you might check into what they have to say.
