I have a younger brother 63, who has ME/CFS. He has had success with Titelbaum/s supplements, but recently has developed a constant internal buzzing/vibration/tingling which was originally believed to be from allergies. After seeing an Allergist, he was told that he had multiple chemical sensitivity and not allergies that can be immunized. How do you treat chemical sensitivity other than move to another location (beach)? Which by the way is not financially possible. Has anyone else experienced this, and if so, how was it handled? Any and all help will be greatly appreciated. It hurts to see him suffer so, as this also affects his sleep.