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Asthma Health Center

Winter Asthma

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By Eric Metcalf, MPH
WebMD Feature

For many people, asthma attacks may happen more often in the winter. 

"There are two challenges for people with asthma in the winter. One is that they spend more time inside. The other is that it’s cold outside," says H. James Wedner, MD, an asthma expert at Washington University in St. Louis.

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Infections and Asthma

When you have asthma, any upper respiratory infection -- like a cold or the flu -- can affect your lungs causing inflammation and airway narrowing. It is important to take measures to stay healthy and be aware of any asthma symptoms, even mild, so that you avoid a more serious asthma attack.

Read the Infections and Asthma article > >

While you’re indoors, you breathe in asthma triggers such as mold, pet dander, dust mites, and even fires in the fireplace. When you venture out, you could have an asthma attack from inhaling the cold air.

Here’s how to breathe easier during the cold months.

Learn Your Triggers

When you inhale something that triggers your asthma, your airways -- the tubes in your lungs that carry air -- can become tight and clogged with mucus. You may cough, wheeze, and struggle to catch your breath.

Talk to your doctor about having tests to find out what your triggers are. Once you know them, you can make some changes at home that may help:

  • Limit time around pets. Having a dog or cat in your home may trigger your asthma. Try to keep it out of the bedroom. Curbing allergy triggers where you sleep can make a big difference, Wedner says.
  • Cover bedding. If mites are a trigger,use mite-proof covers on the mattress, box springs, and pillows, he says. These help keep dust mites away overnight.
  • “Keep the house cool and dry -- dust mites as well as mold don’t grow very well when it’s cool and dry,” Wedner says. Ways to help keep your home dry during the winter include:

                1. Run the fan in your bathroom when taking a bath or shower.

                2. Use the exhaust fan in the kitchen when cooking or using the dishwasher.

                3. Fix leaky pipes and windows.

The common cold and flu are both more likely to strike in the winter and can lead to asthma flare-ups. You can lower your family’s risk of these illnesses, though:

  • Wash your hands. This helps keep viruses from getting into your body when you touch your eyes, nose, or mouth.
  • Stay away from people who are ill. If a coworker or friend has the cold or flu, keep your distance.
  • Get a flu shot. Experts suggest that most people get a flu shot each year. This helps protect you from catching the flu. 

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