Hi Ms Nancy,
Thank you for posting your query.
First of all, I would like to reassure you that your symptoms are not suggestive of multiple
sclerosis.
These painful spasms could be related to low sodium or calcium or potassium in the blood. This can be confirmed by doing blood tests.
Calcium supplementation would be helpful.
What do you mean by polyps in brain, as polyps generally do not appear in brain (they occur in gut, etc).
I hope my answer helps. Please get back if you have any follow up queries or if you require any additional information.
Wishing you good health,
Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad, India
Click on this link to ask me a DIRECT QUERY: http://bit.ly/Dr-Sudhir-kumar
My BLOG: http://bestneurodoctor.blogspot.in