--at describing his abnormal sensations; in fact, more so than most patients much older.
I imagine part of the problem is getting doctors to take a 9-year-old seriously. Though many of us much older have had problems getting doctors to take us seriously.
I hope that insofar as is feasible, the neuros you can take him to can have some sort of specilization in neuropathy/neuropathic pain. Not all neurologists do, and many of us have stories of doctors who have shrugged their shoulders when confronted with our symptoms.