Skip to main content
Check Your Symptoms
Find A Doctor
Find Lowest Drug Prices
Health
A-Z
Health A-Z
Health A-Z
Common Conditions
ADD/ADHD
Allergies
Arthritis
Cancer
Cold, Flu & Cough
Depression
Diabetes
Eye Health
Heart Disease
Lung Disease
Pain Management
Sexual Conditions
Skin Problems
Sleep Disorders
View All
Resources
Symptom Checker
Expert Blogs and Interviews
Podcasts
Message Boards
Questions & Answers
Insurance Guide
Find a Doctor
Featured Topics
Slideshow
Get Help for Migraine Relief
Slideshow
Things That Can Hurt Your Joints
Drugs &
Supplements
Drugs & Supplements
Drugs & Supplements
Find & Review
Drugs
Supplements
Tools
Manage Your Medications
Pill Identifier
Check for Interactions
Drug Basics & Safety
Commonly Abused Drugs
Taking Meds When Pregnant
Featured Topics
Slideshow
Vitamins You Need as You Age
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
Fit Kids
Featured Topics
Slideshow
Which Food Has More Saturated Fat?
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
Expert Blog
Dangers After Childbirth -- What to Watch For
Quiz
Tips for Success ... Things Every Teen Should Know
News &
Experts
News & Experts
News & Experts
Health News
Buyer Beware: Fish 'Fraud'
CBD Products Now Sold at CVS Stores in 8 States
Can Some Kids Outgrow Autism?
Apple Watch May Spot Dangerous Heart Trouble
'Dirty Dozen' Fruits & Vegetables for 2019
Experts & Community
Message Boards
Expert Blogs
News Center
Featured Topics
WebMD Investigates
Lives Lost When ERs Break the Law
Newsletters
Sign Up to Receive Our Free Newsletters
Mobile Apps
Subscriptions
Sign In
Subscribe
My Profile
My Tools
My WebMD Pages
My Account
Sign Out
Top 12 Topics
Astigmatism
Ear Infection Signs
Facial Pain
Scalp Conditions
Cinnamon Benefits
Cancer Symptoms
Unexplained Weight Loss
Birth Control Options
ADHD in Adults
Multiple Myeloma
Autoimmune Diseases
Liver Problems
WebMD Home
John Casey
John Casey is a freelance writer in New York City.
Health Solutions
Clinical Trial Q&A
Alternative Pain Relief
Penis Curved When Erect
How Immunotherapy Fights Cancer
Overcoming Breast Cancer
Need Help Quitting Smoking?
Treat Your Cancer Today
Precision Cancer Care
Cancer Breakthroughs
Cancer Center 101
Choosing An Addiction Center
Cutting Edge Cancer Treatment
Specialized Gynecologic Oncologists
Pain Relief Methods
Bent Fingers?
Heal Dry, Cracked Skin
More from WebMD
How Severe Is Your Psoriasis?
Live Better With MS Assessment
What Is Endometriosis?
Acute Myeloid Leukemia
How Does Chemo Work?
Stuck Inside? Snow Day Activities
Beat Crohn's Flares
Are You Sleeping Correctly?
Managing Diabetes at Work
4 Reasons Prostate Cancer Can Spread
Avoid Allergy Triggers
Treating Advanced Prostate Cancer
Immunotherapy for Lung Cancer
Test Your MS Care Routine
What's New in Psoriasis Research
Where Breast Cancer Spreads