question: Son has swollen knuckles middle joint, seems to. Ache a lot. Nothing terribly serious but after an activity, he wears out quicker than most and complains of minor joint pain in his ankles a arms. Tonight he said he has some shaking in his hands. He has Aspergers so I know he gets anxious but don t want to miss something. Also he has stretch marks from rapid growth spurts. Any direction I should look into? Thank you