Royal fans raised fears after the nation’s longest-serving monarch appeared with a deep purple blemish on her hand while welcoming the King and Queen of Jordan to Buckingham Palace earlier this week.

A 2-year-old twin boy was referred to a cardiology clinic for long-standing cyanosis. He had been born to a healthy 36-year-old mother. The diamnionic, dichorionic twin pregnancy had been complicated ...

Q: Which doctor should I consult if my baby has cyanosis? A: You should immediately go to the emergency room (ER) physician at the nearest hospital, who will refer you to a neonatologist. A: Cyanosis ...