Explain the common clinical signs of "multiple sclerosis" (MS) in humans?In as much detail as possible please.
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.
Other symptoms include loss of sensation, or what some people refer to as a "blurring of touch", as the nervous system becomes less responsive due to the scarring associated with MS. Speech problems, such as slurring, or what is medically termed as Dysarthria. Sometimes patients will experience bladder issues or problems with bowel movements and major depression is also quite common.