Discussions of the emotional and behavioral disturbances associated with Multiple Sclerosis (MS) date as far back as the original diagnostic works by Charcot. Most of the early works addressed emotional reactions such as euphoria that were then commonly felt to be results of the progression of the disease. The early thinking seemed to be that these reactions were brought on solely by the progressive neurological damage. Research continues to focus on the emotional reactions deemed to be inherent in the neurological progression of the disease but is less convinced of even these symptoms and so the debates rage on. Current research has also begun to branch out into the areas of social adaptation and emotional responsivity to the environment.