Dr Meghan Martin has warned parents and patients to watch out for the 'red flag' and 'double red flag' combination of symptoms. First, the timing of the headache is important. 'If the headache is ...

Swimmers should leave the water because of an emergency. The double red flags could also be used in this type of situation.

Red flag warning: They're some of the most dreaded words in fire-prone California. By now, many locals understand the term to basically mean, "Watch out for fires. It's about to get real." ...