Thank so much for the reply aeh, that is very helpful. He is the child who doesn't approach problems conventionally and yet it stresses him out when he doesn't do things the "correct" way. So perhaps that is part of the issue.

He is so precise typically in his expressive language that it makes me think perhaps something else is going on- eg. at 5 he asked what literally and technically meant and then he has used the terms appropriately ever since.

We will take him for further assessment. Thanks!