COVID-19 symptoms

Severe cases of COVID-19 can injure the brain in ways that affect memory, thinking and mood for months after the infection is gone, new research hints. It may even raise the risk of Alzheimer's.

Coughs, sore throats and runny noses are common in fall and winter, and they rarely signal dire disease. But with COVID-19 a threat this year and flu an annual hazard, here's what you need to know.

With cases on the rise, people want to know: How do I look after a family member who's been diagnosed and is at home? And how do I show support for a friend with the virus?

Doctors in the U.S. and Europe are reporting a small wave of cases of what looks like a "shock syndrome" in young people. They have low blood pressure, inflamed hearts and other serious symptoms.

The Centers for Disease Control now recognizes chills, repeated shaking with chills, muscle pain, headache, sore throat and new loss of taste or smell as symptoms of the disease.

Sharing a home with someone who has COVID-19 raises your risk of catching the virus. But the sick person needs your support, as well as good hygiene skills. Try these "best practice" tips.

Edgar Urriola got sick around St. Patrick's Day; he's now on a ventilator. Then the kids got ill. Now his family is trying to keep life as normal as possible while hoping for his recovery.

There are definitely similarities between COVID-19, caused by the coronavirus, and influenza. But there are critical differences as well, including the death rate.

These designations are often used to describe a patient's COVID-19 symptoms. At this stage of the outbreak, there aren't standard definitions, but there are preliminary guidelines.