A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to know about symptoms and vaccines.

Then, his heart stopped. Doctors were able to resuscitate him. Then, they got to work trying to figure out what was wrong.

Matters of the heart are truly sensitive, especially when its electrical system is disrupted. This is also called an ...

Amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease, has been in the headlines lately, owing in large ...

Some symptoms may even appear a few weeks before a cardiac arrest. But many people who have a cardiac arrest had no prior symptoms," says the US National Heart, Lung, and Blood Institute.

Devastating infectious diseases ran rampant in America, killing millions of children and leaving others with lifelong health problems. Over the next century, vaccines virtually wiped out long ...

People are just learning about an often 'silent' disease that affects nearly a third of all adults. According to a recent study, 15 million people from across the US, UK, Germany and France have the ...

A higher intake of ultraprocessed foods is associated with a greater likelihood for nonmotor prodromal symptoms of Parkinson disease.

ATTR-CM (transthyretin amyloid cardiomyopathy) is a rare condition that causes a range of vague symptoms, including shortness of breath. If left untreated, it can progress to heart failure.

Discover the definition of communicable diseases, the symptoms of the different types, and how to avoid them here.

Other early symptoms of Lyme disease mimic what you might experience with the flu: a fever, chills, muscle aches, and swollen lymph nodes.