Summary: Alopecia, an auto-immune disease that causes hair loss, was brought center stage at the Oscars, when actor Will Smith slapped comedian Chris Rock over a joke about his wife Jada Pinkett Smith, who suffers from the condition. We hear from people across the U.S. who are living with the disease, and correspondent Nicole Ellis speaks with a leading expert to learn more about the auto-immune disorder. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
