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) - Topic Overview

neuro_02.jpg

Multiple sclerosis, often called MS, is a disease that affects the central nervous system camera.gif-the brain and spinal cord. It can cause problems with muscle control and strength, vision, balance, feeling, and thinking.

Your nerve cells have a protective covering called myelin. Without myelin, the brain and spinal cord can't communicate with the nerves in the rest of the body. MS gradually destroys myelin in patches throughout the brain and spinal cord, causing muscle weakness and other symptoms. These patches of damage are called lesions.

MS is different for each person. You may go through life with only minor problems. Or you may become seriously disabled. Most people are somewhere in between. Generally, MS follows one of four courses:

The exact cause is unknown, but most experts believe that MS is an autoimmune disease. In this kind of disease, the body's defenses, called the immune system, mistakenly attack normal tissues. In MS, the immune system attacks the central nervous system-the brain and spinal cord camera.gif.

Experts don't know why MS happens to some people but not others. There may be a genetic link, because the disease seems to run in families. Where you grew up may also play a role. MS is more common in those who grew up in colder regions that are farther away from the equator.

Symptoms depend on which parts of the brain and spinal cord are damaged and how bad the damage is. Early symptoms may include:

  • Muscle problems. You may feel weak and stiff, and your limbs may feel heavy. You may drag your leg when you walk.
  • Vision problems. Your vision may be blurred or hazy. You may have eyeball pain (especially when you move your eyes), blindness, or double vision.
  • Sensory problems. You may feel tingling, a pins-and-needles sensation, or numbness. You may feel a band of tightness around your trunk or limbs.
  • Balance problems. You may feel lightheaded or dizzy or feel like you're spinning.
1 | 2
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