CNN Health

Stiff person syndrome — a condition that has caused Celine Dion to cancel her tour — is a rare neurological condition that can take years to diagnose and tailor treatment.

The exoplanet 55 Cancri e goes by several names, but the rocky world located 40 light-years from Earth is most known for its reputation as a "hell planet."

Period underwear has become popular over the last few years, but does it work as well as single-use period products? Gynecologists weigh in on what you should know about quality, care, pros and cons, and choosing the right kind for you.

The US Food and Drug Administration on Thursday authorized updated Covid-19 vaccines from Moderna and Pfizer/BioNTech for use in children from ages 6 months through 5 years.

An unusual bright blast of light detected by multiple telescopes in December 2021 was the result of a rare cosmic explosion that created a wealth of heavy elements such as gold and platinum.

Laura Tejeda had been up watching her 7-month-old daughter Zoelis' breathing all night this past November. She had been to a local hospital near the family's home earlier in the day, concerned about a fever and Zoelis' breathing being off, but had been sent home. In the middle of the night, Tejeda watched Zoelis' chest tighten, and she knew she had to act. She got in a taxi from the Bronx to New York Presbyterian Hospital in Manhattan, where a nurse took one look at Zoelis and brought her straight to the back.

There were about 181,806 nonfatal opioid overdoses recorded in the United States in the past year, and it's taken about 9.8 minutes on average for emergency medical services to reach someone who's overdosing, according to a data dashboard that the White House debuted Thursday.

Covid-19 hospitalizations are on the rise in the United States, with more than 34,000 new admissions last week, but millions of vaccines and doses of antiviral treatments that could help prevent severe outcomes from the virus remain unused.

Researchers have discovered why we get more viral colds, flu and Covid in winter and during cold snaps.

Doctors know that drugs called statins lower a person's risk of a stroke due to a blood clot. But a new study shows that the inexpensive medications can also decrease the risk of a first stroke as a result of an intracerebral hemorrhage, the deadliest kind.

December's full moon, also known as the "cold moon," will shine bright in the night sky this Wednesday, peaking at 11:08 p.m. ET.

More than a year and a half after its first flight on Mars, the Ingenuity helicopter has set a new record.

A core of ice age sediment from northern Greenland has yielded the world's oldest sequences of DNA.

How does one go on with a holiday under such circumstances? On the one hand, the entire family was together for the first time in many years, and there was lots to do. On the other, there was little time to think about what we'd just witnessed or process our emotions.

As a triple threat of respiratory illnesses -- flu, Covid-19 and respiratory syncytial virus, known as RSV -- sweeps the United States, emergency departments are using one small tool more than usual to monitor whether a patient needs oxygen: the pulse oximeter.

Neck pain may have many causes: Stress, poor posture, texting, injuries from sports, car or other accidents and chronic illnesses such as fibromyalgia, to name a few. But there's another culprit you may not be considering — how you sleep.

To help prevent outbreaks of food-related illness and problems like the formula shortage, the US Food and Drug Administration needs a clearer mission and a different kind of leadership, and it has to act with more urgency, according to a highly critical new report.

Colon cancer has claimed another life. Emmy Award and Golden Globe winner Kirstie Alley, best known for her roles in the television sitcoms "Cheers" and "Veronica's Closet," died Monday at age 71 after battling cancer that was "recently discovered," according to a family statement.

On Christmas Eve in 1972, humanity received a gift: A portrait of the Earth as a vivid globe.

A measles outbreak in central Ohio is growing, sickening more than 50 children, with many of them needing hospitalization, according to data updated Wednesday by Columbus Public Health.