A 25 year old woman is referred from the optician following an episode of blurred vision 18 months previously and a recent episode of double vision in the last week. In the last 3 months she has also found that she can suddenly experience the feeling of needing to go to pass urine and has to rush to get to the toilet in order to avoid wetting herself. What is the most likely diagnosis for this patient?
1) Multiple sclerosis
2) Diabetes mellitus
3) Urinary tract infection
4) Migraine