My son is 5 yrs. old. He is non-verbal. He frequently bites his forearm in the same place. We have consulted various therapists and tried different things, but he still does it. I have seen pictures of kids with protection to limit the amount of injury, but haven't had any luck finding such devices. I have searched every possible combination of words I can think of. Does anybody know what the arm protectors are called? If you could tell me what they are called I could find them myself. thanks!