Is there a reason that a doctor would avoid giving a diagnosis of MS? 25 years ago a neurologist told me that I had MS. My symptom was depression and whatever he saw on a brain scan. When I told my PCP that, he rolled his eyes, and put me on an antidepressant. Recently I had a volumetric MRI which shows that I only have 10% white matter compared to others aged 72. My current doctor says I do not have MS, just keep taking the antidepressant. I have other symptoms that suggest MS - mild incontenance, arm and leg pain, mild cognitive impairment, and tingling in my face (chin, lips, nose). What symptoms are required to diagnose MS?