Medically reviewed by Smita Patel, DO Key Takeaways Early signs of multiple sclerosis (MS) can include blurry vision, muscle weakness, dizziness, and fatigue.Clinically isolated syndrome (CIS) is ...

Multiple sclerosis (MS) is a disorder that prompts the body's immune system to attack myelin, the protective sheath covering nerve cells in the brain, optic nerve and spinal cord. This can in turn ...

Color blindness, or color vision deficiency, causes a person to see colors differently from most other people. There are several types of color blindness. Color vision deficiency or loss has multiple ...