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
    • Best Hospitals
    • Find a Doctor
    • Surgeries and Procedures A-Z
      • Featured Topics
    • man on sofa sick with flu Slideshow Signs You Have Already Had COVID
    • 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
    • photo of vaccine Coronavirus COVID-19 Vaccines
  • 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
    • 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
    • Fauci: The Pandemic Isn’t Over, but It's Getting Better
    • Weighted Blankets Promote Sleep by Releasing Melatonin
    • Eating Earlier Has Health Benefits
    • 10,000 Steps a Day Has Real Benefits
    • Long COVID: What We Know So Far
    Experts & Community
    • Support Groups
    • Blogs
    • Webinars
    • News Center
    • Dr. Whyte's Book: Take Control of Your Diabetes Risk
      • Featured Topics
    • photo of Dr. Kyle Patton WebMD Investigates Street Medicine Reaches People Where They Live
    • photo of person typing Get Our Newsletters Health News and Information, Delivered to Your Inbox
  • Mobile Apps
  • Subscriptions
  • Sign In
  • Subscribe
  • My Profile
    • My Tools
    • My WebMD Pages
    • My Account
    • Sign Out

    Top 12 Topics

    • Coronavirus (COVID-19)
    • CBD Oil
    • Keto Diet
    • Hepatitis C
    • Diabetes Warning Signs
    • Rheumatoid Arthritis
    • Morning-After Pill
    • Breast Cancer Screening
    • Psoriatic Arthritis Symptoms
    • Heart Failure
    • Multiple Myeloma
    • Types of Crohn's Disease
    • Medical Dictionary

    Medical Dictionary

    Browse Medical Terms

    • a
    • b
    • c
    • d
    • e
    • f
    • g
    • h
    • i
    • j
    • k
    • l
    • m
    • n
    • o
    • p
    • q
    • r
    • s
    • t
    • u
    • v
    • w
    • x
    • y
    • z
    • Echolalia
    • Echopraxia
    • Ectrodactyly
    • Ed.D.
    • EDD
    • electrical burns
    • Electrolytes
    • Elephantiasis
    • Emetophobia
    • Eosinophilic esophagitis
    • Epidermodysplasia verruciformis
    • Epistaxis
    • Equine therapy
    • Eructation
    • Estrogen replacement therapy
    • Eupnea
    • Expectant management or therapy
    • Exploding head syndrome
    • External obliques
    • External urethral sphincter muscle
    • Eyelid myokymia

    Today on WebMD

    Puppy digging hole

    Risky Mistakes Pet Owners Make

    Some of these might surprise you.
    woman eating

    Depressed, Guilty Feelings After Eating?

    Symptoms of binge eating disorder.
    psoriasis on female neck

    Psoriasis Home Remedies

    14 tips to ditch the itch.
    pack of cigarettes

    Quit Smoking

    Get your personalized plan.

    Health Solutions

    • Penis Curved When Erect?
    • Could I have CAD?
    • Treat Bent Fingers
    • Treat HR+, HER2- MBC
    • Tired of Dandruff?
    • Benefits of CBD
    • Rethink MS Treatment
    • AFib-Related Strokes
    • Risk of a Future DVT/PE
    • Is My Penis Normal?
    • Relapsing MS Options
    • Liver Transplants Save Lives
    • Finance Plastic Surgery
    • Bent Finger Causes
    • Living With Psoriasis?
    • Missing Teeth?

    More from WebMD

    • 5 Tips to Help With Relapsing 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
    • Crohn's: A 'Full-Body' Disease
    • Avoiding Crohn’s Flares
    • Health Benefits of Hemp Seed Oil
    • Live Better With Psoriatic Disease
    • Types of B-Cell Therapy for MS
    • 5 Health Benefits of Hemp
    • Why Prostate Cancer Spreads
    • Living with Advanced Breast Cancer
    • 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.