Skip to main content
Logo for WebMD
Logo for WebMD
  • Coronavirus Update
  • Check Your Symptoms
  • Find A Doctor
  • Find A Dentist
  • Connect to Care
  • Find Lowest Drug Prices
  • Health
    A-Z
    Health A-Z
    Health A-Z
    Common Conditions
    • ADD/ADHD
    • Allergies
    • Arthritis
    • Cancer
    • Coronavirus (COVID-19)
    • Depression
    • Diabetes
    • Eye Health
    • Heart Disease
    • Lung Disease
    • Orthopedics
    • Pain Management
    • Sexual Conditions
    • Skin Problems
    • Sleep Disorders
    • View All
    Resources
    • Symptom Checker
    • WebMD Blogs
    • Podcasts
    • Newsletters
    • Questions & Answers
    • Insurance Guide
    • Find a Doctor
    • Children's Conditions A-Z
    • Surgeries and Procedures A-Z
    • Featured Topics
    • woman experiencing chest discomfort Symptom Checker COVID-19: Check Your Symptoms Now
    • photo of migraine Slideshow Get Help for Migraine Relief
  • Drugs &
    Supplements
    Drugs & Supplements
    Drugs & Supplements
    Find & Review
    • Drugs
    • Supplements
    Drug Basics & Safety
    • Commonly Abused Drugs
    • Taking Meds When Pregnant
    Tools
    • Manage Your Medications
    • Pill Identifier
    • Check for Interactions
    • Drug Comparison Tool
    • Featured Topics
    • assorted vitamins Slideshow Vitamins You Need as You Age
    • berry and yogurt on spoon Slideshow Supplements for Better Digestion
  • Living
    Healthy
    Living Healthy
    Living Healthy
    Diet, Food & Fitness
    • Diet & Weight Management
    • Weight Loss & Obesity
    • Food & Recipes
    • Fitness & Exercise
    Beauty & Balance
    • Healthy Beauty
    • Health & Balance
    • Sex & Relationships
    • Oral Care
    Living Well
    • Women's Health
    • Men's Health
    • Aging Well
    • Healthy Sleep
    • Healthy Teens
    • Featured Topics
    • grocery cart Article Smart Grocery Shopping When You Have Diabetes
    • walking sneakers Quiz Do You Know the Benefits of Walking?
  • Family &
    Pregnancy
    Family & Pregnancy
    Family & Pregnancy
    All About Pregnancy
    • Getting Pregnant
    • First Trimester
    • Second Trimester
    • Third Trimester
    • View All
    Parenting Guide
    • Newborn & Baby
    • Children's Health
    • Children's Vaccines
    • Raising Fit Kids
    • View All
    Pet Care Essentials
    • Healthy Cats
    • Healthy Dogs
    • View All
    • Featured Topics
    • apple slices and peanut butter Slideshow Smart Snacks When You're Pregnant
    • photo of dogs kissing Slideshow Surprising Things You Didn't Know About Dogs and Cats
  • News &
    Experts
    News & Experts
    News & Experts
    Health News
    • Coronavirus News & Updates
    • COVID-19 Vaccines -- Latest Updates Here
    • COVID-19: Check Your Symptoms Now
    • Coronavirus in Context: Interviews With Experts
    • Social Distancing, Quarantine Explained
    Experts & Community
    • WebMD Blogs
    • News Center
    • Featured Topics
    • photo of coronavirus cell WebMD News Get the Latest COVID-19 News Here
    • photo of person typing Newsletters Sign Up to Receive Our Free Coroanvirus Newsletter
  • Mobile Apps
  • Subscriptions
  • Sign In
  • Subscribe
  • My Profile
    • My Tools
    • My WebMD Pages
    • My Account
    • Sign Out

    Brain & Nervous System Home

    • News & Features
    • Reference
    • Slideshows
    • Quizzes
    • Videos
    • Questions & Answers
    • Find a Neurologist

    Related to Brain & Nervous

    • Living Better With MS
    • ADHD
    • Alzheimer's Disease
    • Autism
    • Bell’s Palsy
    • Concussion
    • Creutzfeldt-Jakob Disease
    • Epilepsy
    • Guillain-Barré Syndrome
    • Lou Gehrig’s Disease (ALS)
    • Multiple Sclerosis
    • Parkinson's Disease
    • Restless Legs Syndrome
    • Spinal Muscular Atrophy
    • Stroke
    • More Related Topics
    • Brain & Nervous System

    5 Types of Spinal Muscular Atrophy

    Brain and Nervous System Questions & Answers

    • Can dehydration cause dizziness?
    • What should I do after treatment for benign paroxysmal positional vertigo?
    • Can blood flow problems cause dizziness?
    • When should you call your doctor about benign paroxysmal positional vertigo?
    • What causes benign paroxysmal positional vertigo?
    • Will I need surgery for benign paroxysmal positional vertigo?
    • What can you do at home to treat benign paroxysmal positional vertigo?
    • Can an infection cause dizziness?
    • How does my sense of smell work?
    • What is auditory processing disorder (APD)?
    • What causes auditory processing disorder (APD)?
    • How is auditory processing disorder (APD) diagnosed?
    • How is benign paroxysmal positional vertigo diagnosed?
    • How is neuromyelitis optica diagnosed?
    • What is the treatment for auditory processing disorder (APD)?
    • Is there a reason for laughing or crying suddenly, and uncontrollably?
    • How long should you take a break after getting a concussion?
    • What are the most common symptoms of polyneuropathy?
    • Can low blood sugar cause shaky hands?
    • Can nerve damage cause shaky hands?
    • Can a B12 deficiency cause shaky hands?
    • How can I prevent myasthenia gravis?
    • What are the types of tics?
    • What is a transient tic disorder?
    • How can paresthesia be treated?
    • 1 of 10
    • Next Page

    Today on WebMD

    nerve damage

    What Is Multiple Sclerosis?

    Learn how this disease affects the nervous system.

    tired man

    Why Is My Muscle Twitching?

    Causes of spasms and cramps.

    woman in art gallery

    Keep Your Brain In Good Shape

    Tips to stay smart, sharp, and focused.

    medical marijuana plant

    Medical Marijuana

    What is it used for?

    Recommended for You

    human brain Article

    Is It MS or Am I Having a Stroke?

    boy hits soccer ball with head Slideshow

    How Head Injuries Hurt Your Brain

    red and white swirl Article

    Vertigo: Types, Causes

    marijuana plant ARTICLE

    Medical Marijuana: Can It Treat MS?

    brain illustration stroke Slideshow

    What Is a Stroke?

    nerve damage Slideshow

    MS Symptoms & Causes

    Alzheimers Overview Slideshow

    Signs of Alzheimer's Disease

    Graphic of number filled head and dna double helix Quiz

    How Well Do You Know Your Brain?

    Tools & Resources

    • What Is Sluggish Cognitive Tempo?
    • Stroke Explained in Photos
    • Parkinson's Disease Overview
    • Types of Psychotic Disorders
    • Treating and Preventing Migraines
    • MS & Your Brain: 10 Ways to Stay Sharp

    Health Solutions

    • Penis Curved When Erect
    • Could I have CAD?
    • Treat Bent Fingers
    • Discover hATTR Symptoms
    • Discover Immunotherapy
    • Relapsing MS Options
    • Rethink MS Treatment
    • AFib-Related Strokes
    • Risk of a Future DVT/PE
    • Is My Penis Normal?
    • Weight-Loss Surgery
    • Liver Transplants Save Lives
    • Finance Plastic Surgery
    • Bent Finger Causes
    • Trouble Urinating?
    • Missing Teeth?

    More from WebMD

    • Finding the Care You Need for MS
    • How to Thrive With Narcolepsy
    • Relief for Blocked Hair Follicles
    • Psoriatic Arthritis and Your Sleep
    • What Psoriasis Feels Like
    • First Psoriatic Arthritis Flare
    • Talking to Your Doctor About RA
    • Common Psoriasis Triggers
    • Avoiding Crohn’s Flares
    • Living With Ankylosing Spondylitis
    • When RA Symptoms Get Worse
    • Types of B-Cell Therapy for MS
    • Living Better With T2 Diabetes
    • Why Prostate Cancer Spreads
    • When Ulcerative Colitis Flares
    • Where Breast Cancer Spreads
    • Logo for WebMD
      • Visit WebMD on Facebook
      • Visit WebMD on Twitter
      • Visit WebMD on Pinterest
    • Policies

      • Privacy Policy
      • Cookie Policy
      • Editorial Policy
      • Advertising Policy
      • Correction Policy
      • Terms of Use

      About

      • Contact Us
      • About WebMD
      • Careers
      • Newsletter
      • Corporate
      • WebMD Health Services
      • Site Map
      • Accessibility
    • WebMD Network

      • Medscape
      • Medscape Reference
      • MedicineNet
      • eMedicineHealth
      • RxList
      • OnHealth
      • WebMDRx
      • First Aid
      • WebMD Magazine
      • WebMD Health Record
      • Dictionary
      • Physician Directory
    • Our Apps

      • WebMD Mobile
      • WebMD App
      • Pregnancy
      • Baby
      • Allergy
      • Medscape

      For Advertisers

      • Advertise with Us
      • Advertising Policy

    © 2005 - 2019 WebMD LLC. All rights reserved.

    WebMD does not provide medical advice, diagnosis or treatment.

    See additional information.