Doctors break down the key warning signs, including the signature rash.

Pertussis is making a resurgence—just when we thought cold-and-flu season couldn’t get any worse.

An air quality index over 150 is bad for you...and the peak in LA was more than double that.

It’s like a bad chest cold with some serious stamina.

Don’t panic—the cause could be a common, non-life-threatening condition.

The gymnastics legend was feeling okay—then her neighbor found her lying on the floor, struggling to breathe.

It requires a lot less effort than you might think.

The physical effects of never-ending rage are real.

Health authorities are testing samples to try to determine the cause of the illness.

The signs go way beyond sneezing and wheezing.

You could have this common condition. 

Don’t let asthma ruin your joy.

Make sneezing a thing of the past.

And why your triggers matter.

How long can pneumonia symptoms actually last?

Because you shouldn’t have to suffer through this.

Many of them can easily lurk in your home.

Here’s how it differs from typical seasonal allergies.

Look to your triggers for the answer.

And how to keep them in check.