More than once he had a severe reaction to a drug.

Call your doctor if you have a severe reaction after being in the sun.

So go to the emergency room every time you have a severe reaction.

I've had several severe reactions over the past few years, the most recent one in August.

"About 15 percent of those who call us indicate a severe reaction," he said.

From studies that have been done so far, severe reactions are very rare.

He did not follow his victory up with any severe reactions.

In severe reactions, people can go into shock and die.

If you have a severe reaction, your first treatment may occur in an emergency room.

A severe allergic reaction to the drug has killed five Americans.