Multiple Sclerosis (MS) attacks the nervous system. It is a physical disease which disrupts communication between the brain and nerves in the body. It is not a case of "being bad with your nerves" but rather that motor nerves, which operate muscles, and sensory nerves, which convey sensation such as touch, may not work properly. This may mean for example difficulty in walking or a failure to sense a very hot object.
But not all nerves are affected by MS. Some, such as the nerves working the heart and lungs, are not directly affected by MS.
What happens when MS attacks? The nerve covering known as the myelin sheath becomes inflamed and messages travelling to and from the brain to various parts of the body are either altered or interrupted. This may be a frightening experience not only for the sufferer but also for family and friends. Such an attack may be disabling and make the person feel very unwell. But fear of MS is compounded by not understanding the nature of the disease and anxiety over unpredictable outcomes.
Not everyone with MS is affected in precisely the same way. Also MS attacks follow no uniform pattern. Some people may experience repeat attacks which are very similar while others will find that each attack affects them in a different way.