I’m fascinated by the Brain functioning. I think a great way to know the mechanisms involved in mental processes is to understand neurological diseases. There are too many questions in relation to neurological diseases etiology and pathogenesis. Among all, I’m more concerned about Multiple Sclerosis which has a quit emerging prevalence in my country and the world. Based on geographical distribution, Iran is located in an area with low prevalence of MS, but surprisingly, the prevalence of MS is considered high in Iran, especially in two largest cities, Tehran and Isfahan. MS is more common in younger patients, so the burden of MS related disabilities is so high. Finding the etiology and c