Most colds clear up on their own, but some get worse. Here are the warning signs your cold is getting worse—and when to ...

Influenza activity is currently high in California, with a significant number of flu-related hospitalizations and deaths reported this season. Fever is the body's natural response to fight off ...

Whether stemming from a wound, a toothache or an infection like the flu, nearly everyone has experienced the discomfort of having a fever. While fevers can be inconvenient and are sometimes a sign of ...

"The flu" has several strains, with flu A and flu B considered the most common and most severe. Here's what to know as flu ...

It's once again the time of year for an uptick in illnesses such as colds, the flu, COVID and RSV. Here are the signs and ...

Scarlet fever is a contagious infection that is most common in young children, and while symptoms can range from mild to ...

Three-day fever is one of the mild illnesses that children typically encounter early on. FITBOOK explains how parents should ...

A positive COVID-19 test result is not something that anyone wants to see — but now there may be an extra reason to avoid getting sick. FG Trade / Getty Images COVID infections cause miserable ...

Mild fever may not necessarily be a cause for concern, but it’s important to monitor it and see how it progresses. If your fever is persistent or worsens, don’t hesitate to contact a doctor. You may ...

CDC has issued travel health notices for four countries contending with chikungunya outbreaks in recent months. What to know ...

Valley fever, also called coccidioidomycosis or "cocci," is an infectious disease caused by the Coccidioides fungus that grows in the soil and dirt in some areas of California. Valley fever is a lung ...