What Causes a Cold Sore? Factors can include injury or stress.
Why the Frequent Nosebleeds? What can cause them in children.
When It's Difficult to Swallow. Possible causes for dysphagia.
Protect Yourself From Wildfire Smoke Exposure. Stay inside and try to keep indoor air clean.
Identifying Signs of the Common Cold. Here are typical symptoms.
The Sunshine Vitamin and COVID: New Study Finds Mixed Results for Recovery
Norovirus Sickens Close to 200 People on Caribbean Cruise
New Flu Strain Weakened This Year’s Vaccine Protection, CDC Says
Small Drop In Measles Vaccinations Tied to Big Jump In Cases
Sixth Measles Case Confirmed in New Mexico Jail
Review of U.S. Measles Elimination Status Delayed Until November
