<prompt> Which one of the following is not predictive of long-term disability in patients with multiple sclerosis?Length of intervals between relapsesIncomplete recovery from relapsesOptic neuritis in the first 2 yearsFrequency of relapses  <response>: Option A Length of intervals between relapses - Predicts disability, as if more gap between 2 symptoms, patients prognosis will be better. If symptoms develop 1 after the other, so length of interval is lesser so BAD prognosis. Option B Incomplete recovery from relapses- Symptoms are stabilizing and recovering, so symptoms disappearing on its own is good prognosis and incomplete recovery is bad prognosis. Option C Optic neuritis in the first 2 years- Optic Neuritis in the first 2 years doesnt signify bad prognosis as optic neuritis patients responds well to STEROIDS METHYL PREDNISOLONE Option D Frequency of relapses- More frequent the disease reappears, indicates long term disability. 