I am a 40 yr old female with PMH of fibromyalgia. I have had a lot of strange neuro symptoms the last few months: numbness, tingling, memory loss, migraines, blurred vision, severe depression, personality changes, etc... Was referred to a neurologist. Neuro exam quoted as "normal". Labs and MRI brain and c-spine orderd. Phone call from nurse two weeks later: Vit D was very low at 8.2. Was started on 50,000u 3x week for that.