Multiple Sclerosis, Central Nervous System, Treatment Options, Disease-Modifying Therapies (DMTs), Interferon Beta, Glatiramer Acetate, Fingolimod, Natalizumab, Dimethyl Fumarate, Teriflunomide, Alemtuzumab, Ocrelizumab, Medications for Pain Relief/Muscle Spasms, Physical Therapy/Occupational Therapy/Speech Therapy/Psychological Counseling/Lifestyle Changes/Alternative Therapies (Acupuncture/Massage), Clinical Trials,