This book explains, in a clear and accessible way, what is currently known about multiple sclerosis. It covers the possible causes of the disease, the way in which it is diagnosed, and the different forms of treatment - both conventional and alternative. It offers practical advice on living with the disease and coping with its physical and psychological effects. Fully updated to include the most recent advances in knowledge, this third edition covers recent theories of the causes of multiple sclerosis, investigations such as MRI scanning and new treatments including suppression of the immune system.