Medical case narrative
A woman in her late 60s — "primary progressive MS" that was a vitamin
What happened
A 69-year-old woman was carrying a diagnosis of primary progressive multiple sclerosis — a diagnosis that usually means steady decline with limited treatment options.
What it looked like
Progressive difficulty walking, the kind of slow neurological decline that fits PPMS.
What the labs found
Her vitamin B12 was 56 pg/mL — profoundly low. Her spinal MRI showed the "inverted V" sign in the spinal cord that points to B12 deficiency damage, and she had no oligoclonal bands (a spinal fluid finding that usually supports MS). A planned MS drug, ocrelizumab, was never started.
What changed
With B12 treatment, she was walking unaided in about two months.
The test that told the story
Serum vitamin B12 (with spinal MRI correlation).
Sources: Published case report and independent coverage.