“The symptoms of MS are often unpredictable. They may be mild or severe, short-term or long-lasting. They may appear in different combinations, depending on the area of the nervous system affected. About 50% of all people with MS have thinking (cognitive) problems linked to the disease. The effects of these problems may be mild. Your healthcare provider may only find them after much testing.”

John Hopkins Medicine (https://www.hopkinsmedicine.org/health/conditions-and-diseases/multiple-sclerosis-ms)