I was delighted to put this offer between people academic interested and general readers to illustrate some facts which concerned multiple sclerosis (MS). The etiology of disease is still not known clearly, so that I suggested a research work to include a study role of interleukin-35 with some immunity parameters. As well to discover the role of some effective hormones on patients who were suffering from disease in Baghdad teaching hospital. After a period of study, it is possible to say that the correlation effect between Immunological parameters and hormones is significant. That should create new idea about a suitable diagnosis. On the other hand, it should design a safe drug in the near future. Other purpose to publish this book is to inform the society the symptoms and ways of diagnosis. I think this medical problem will be solved by cooperation between researches, patients and people. I hope you will enjoy the reading of this book. Ali Kadhum