What is Multiple Sclerosis?

Multiple sclerosis (MS) is an autoimmune disease affecting the central nervous system. A variety of symptoms are possible, often beginning with periods of flare-ups and remissions.

 

 Get Text Updates from MSAA 

MSAA iconText MSAA to 75101

Why sign up?

You’ll get important MS-related news, crucial updates about our programs, and easy ways to support the MS community right from your phone.

By participating, you agree to the terms and privacy policy for recurring autodialed campaign & donation messages from MSAA to the phone number you provide. No consent required to buy. Message and data rates may apply.

 

MS Conversations: MSAA’s Blog

Ask the Expert: MS Hug

MSAA

Featuring Barry A. Hendin, MD MSAA’s Chief Medical Officer Question: What causes the pain and tight pressure around the body known as an “MS hug,” how is it treated, and can it be avoided? Answer: The causes of the MS

Read More

 

Last Updated: May 1, 2026