Does Temperature and Humidity Affect Asthma

Pat:: Hi. My biggest problem is being where it’s hot. And I hear cold air is what triggers asthma attacks, and I can go out in 20 degrees, shovel my porch from snow, the ramp halfway to the car, and if I come in the house at 70° I have a hard time vacuuming the floor. So I’m wondering if maybe asthma can do this?
Dr. Redding:: I think for one thing the cold and particularly cold dry air is known to be a precipitant for asthma. And dryness in the air can cause almost as many problems as cold, so that you may be encountering a difference in humidity. Yakima is not known for being a humid climate like west of the Cascades. Alternatively, when you come into the house you may be experiencing some response to something in your house as opposed to just the temperature.
Dr. Stempel:: The inside humidity is pretty low in your home too when you get in there. And so that might be another thing that’s affecting you there. But when you vacuum, you’re doing a good job and stirring up dust and not only stirring up dust mites but also a lot of particulate matter, and that can be an airway irritant. So it’s real tricky to be certain which is causing the problem, but I think there are multiple factors there that might be causing some of your breathing difficulty.

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