There are a lot of different possible clinical signs or symptoms of multiple sclerosis. I would suggest that you look at the following site to get the full details -- it's from a highly respected medical clinic.
As you can see there the major symptoms involve the degradation of function in various parts of the body. For example, a person can experience loss of vision and pain in eye movement. This usually happens in only one eye. A person experience tingling or pain, again, in only specific parts of the body. More generally, someone with MS may suffer from dizziness or fatigue.
As I said before, have a look at that link for more information.