Hi, my son met with an accident two years back. He lost his best friend during the accident. He had a brain injury and as result, he lost his memory. But now he has regained his memory by practicing Yoga and medication. Now he is studying in 12th grade. But during his exam time, he gets over stressed. Not only that his friends told that he is not talking with anyone. His lover says that he never spent time with her. She also told about a biofeedback procedure from a clinic in Toronto. She said that it may help him in reducing the stress and energy level. Will this really work? Is there any medication required for this treatment? How is the treatment carried out? Will it cover insurance? Please help me out.