Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier
WebMD

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine
WebMD

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion
    WebMD

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community
    WebMD

    Community

    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Multiple Sclerosis Health Center

Font Size
A
A
A

Multiple Sclerosis (MS) - Cause

The cause of multiple sclerosis (MS) is unknown. Because a person's risk of MS is slightly higher in some families when a relative has MS, there may be a genetic link. For more information, see What Increases Your Risk.

Some research suggests that where you lived as a child and viral illnesses you have had could be triggers for MS later in life. But these links have not been proved.

Recommended Related to Multiple Sclerosis

Primary Progressive Multiple Sclerosis

A person with primary progressive multiple sclerosis (PPMS) may first see a doctor because of leg weakness or trouble walking. Those are the most common symptoms of this type of MS. Once it starts, PPMS gets worse over time. How fast it happens or how much disability a person will have varies a lot, so it’s hard to predict. Unlike some other types of MS, there are no relapses or remissions. Ten percent to 15% of people with multiple sclerosis have this type of the disease. They usually get their...

Read the Primary Progressive Multiple Sclerosis article > >

WebMD Medical Reference from Healthwise

Last Updated: September 11, 2014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
1
Next Article:

Today on WebMD

nerve damage
Learn how this disease affects the nervous system.
woman applying lotion
Ideas on how to boost your mood and self-esteem.
 
woman pondering
Get personalized treatment options.
man with hand over eye
Be on the lookout for these symptoms.
 
brain scan
ARTICLE
worried woman
ARTICLE
 
neural fiber
ARTICLE
white blood cells
VIDEO
 
sunlight in hands
ARTICLE
marijuana plant
ARTICLE
 
muscle spasm
ARTICLE
Neuron
ARTICLE