You can’t always know when you’ll have to go to the ER, but there are things you can stop doing to keep safe, according to emergency physician Dr. Leana Wen.

A shooting in a ER can serve as a reminder that ERs aren't always the best place for someone in an acute psychiatric crisis.

While inside the ER, 30-year-old Maximillian B.D. Yanofsky and a security guard got into a fight that turned into a shooting, Scottsdale police said.

According to research from UChicago Medicine, you should go to an ER if you are experiencing symptoms such as sudden and severe chest pain, difficulty breathing, confusion and disorientation following a head injury, significant bleeding that cannot be controlled, severe burns or if you suspect you are having a stroke.

Drew Davenport, Crestwood’s chief development officer, told the board the “immense growth” around I-565 led the provider to seek to build the freestanding ER. It will offer an “alternative choice” for people seeking emergency treatment, he said.

A 30-year-old man went to the hospital “as a potential patient” and later shot a security guard after an altercation, police in Arizona said. The man who was “ quickly detained ” by other hospital security workers and staff was arrested, the Scottsdale Police Department said in a March 3 post on Facebook.