SSA goes by their owns laws and policies when determining disability. It does not matter what a business or other government agencies do. He might have to work in a different field. It will be harder for him to be approved because of his education. If his doctor believes he can return to work. His doctor stating he can return to work indicates he has little to no chance of being approved at this point. If his medical records do not give the diagnosis of a medical determined impairment. He will not be approved. If it does but varies treatments have not been tried and failed. He will not be approved. His doctor believing it might be a specific condition. Does not mean he has been diagnosed with that condition. If diagnostic tests do not confirm his doctor's opinion of a specific condition. It is doubtful SSA will give his doctors professional opinion much, if any weight.