it is an autoimmune disease that attacks the nervous system due to which patients can have a range of symptoms of optic neuritis, to stiffness, difficulty walking, and some people due to the development of the disease can develop a high level of disability.

How would the previous sentence be correctly capitalized?
It is an autoimmune disease that attacks the nervous system due to which patients can have a range of symptoms of optic neuritis, to stiffness, difficulty walking, and some people due to the development of the disease can develop a high level of disability.