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A stroke is a serious medical event and can lead to disability or even death if not treated quickly, said Dr. Andrew Freeman, director of clinical cardiology and cardiovascular prevention at National Jewish Health. And they are common: Someone in the US has a stroke every 40 seconds, according to the CDC. US Sen. Chris Van Hollen, a Democrat from Maryland, announced Sunday that he had suffered a "minor stroke." That same day, Pennsylvania Lt. Gov. John Fetterman announced he was recovering after a stroke. In light of the news -- and National Stroke Awareness Month -- experts are urging members of the public to learn more about the signs of stroke, so they are able to identify them and get medical help early. What a stroke actually is "A heart attack is a heart attack, and a br...

Placeholder while article actions load The young child had been vomiting for days and was now at a Birmingham, Ala., hospital with yellowing eyes and a severely inflamed liver. Helena Gutierrez, a pediatric gastroenterologist, ran blood tests that immediately ruled out all the common causes of viral hepatitis. She remembered thinking how rare it was to see acute hepatitis with an unknown cause in an otherwise healthy child. Within a week, a second child with the same symptoms showed up at Children’s of Alabama. And then a third. “Sometimes in medicine, cases come in threes, so we started to think, ‘Maybe three cases and we’ll be done,’ ” Gutierrez said. But the cases kept coming. Over the next four months, doctors would care for nine children, all younger than 6, with severe liver infla...