What Are Asthma Triggers? One way to help manage your child's asthma is to avoid asthma triggers. These are things that are harmless to most people, but can cause flare-ups in kids with asthma. Common asthma triggers include: allergens like pollen, mold, and pet dander dirty air (irritants or pollutants) respiratory infections, like colds or the flu weather conditions exercise gastroesophageal reflux (GER) Other, less common triggers include laughing, crying, and use of some medicines. Kids can't avoid all triggers all the time. But watching carefully to learn what those triggers are and then helping your child avoid them can keep asthma symptoms under control. What Are My Child's Asthma Triggers? Triggers are different for each child. Some might cause asthma symptoms only at particular times of the year. Others might stop being a trigger as a child gets older and "outgrows" asthma. You'll work with your doctor to find your child's triggers. The doctor may suggest keeping an asthma diary to record your child's symptoms, medicines, and peak flow readings. You can also write down when and where symptoms happened to help you identify possible triggers. If your doctor thinks allergens are triggers, your child might need an allergy skin test. How Can We Avoid Asthma Triggers? If Allergens Are a Trigger Allergens are one of the most common asthma triggers. They include: animal dander (tiny flakes of dead skin), saliva (spit), or urine (pee) and feathers cockroaches dust mites mold pollen It's impossible to avoid all allergens, but you can minimize them in your home. Focus on the rooms where your child sleeps and plays: Keep these areas as clean and dust-free as possible. Vacuum and dust weekly, eliminate clutter, get rid of unneeded stuffed animals and wash other stuffed animals in hot water regularly. Wash sheets weekly in hot water and get rid of feather pillows and comforters. Use hypoallergenic covers for the mattress, box spring, and pillows. Remove rugs and carpeting wherever possible. Clean curtains (which should be washable) often. Make sure damp areas like bathrooms, basements, and laundry rooms are cleaned often and properly ventilated to prevent mold and mildew. Run dehumidifiers in damp areas. Don't use humidifiers. Check your local mold and pollen count readings and plan indoor activities for windy days, which can lead to high counts. Use bait traps or professional extermination to rid your home of cockroaches. Keep your kitchen clean and your house free of stacks of paper. If Irritants (Pollutants) Are a Trigger Irritants can affect anyone — even someone who doesn't have asthma. They're not usually a serious problem, but for kids with asthma, they can lead to swollen airways and flare-ups. Common irritants include: perfumes aerosol sprays cleaning products wood and tobacco smoke paint or gas fumes air pollution Here are some ways to reduce household irritants: If a product triggers your child's asthma, switch to an unscented or non-aerosol version of it. Don't have wood fires in your home. Keep your child away from areas where painting or carpentry work is being done. If you cook on a gas stove, make sure your kitchen is well ventilated — to the outside, if possible. Forbid smoking in your home and car, and make sure your child avoids smoky environments (like restaurants or parties). Consider buying an air cleaner for your home or run the air conditioning year-round (clean the filter regularly). Also check air quality reports. On days when the quality is especially bad, keep your child indoors with the air conditioning on. Preventing Infections Respiratory infections, such as colds or the flu, can be hard to avoid. For kids with asthma, breathing problems triggered by colds can last days or even weeks after the cold has gone away. Teach everyone in your family the importance of hand washing. Kids 6 months and older should get the annual flu vaccine. This is especially important for kids with asthma, who are at greater risk for health problems if they get the flu. If Extreme Weather Is a Trigger Some weather conditions can trigger asthma flare-ups, including: windy conditions (which may stir up pollens and molds) heavy rain (which can make trees and grasses produce more pollen) extreme cold or heat humidity or very dry air If weather conditions are a trigger, keep an eye on the forecast and limit your child's time outdoors on problem days. If cold weather is a trigger, cover your child's nose and mouth with a scarf. If hot, humid weather is a problem, keep your child in an air-conditioned environment. In some cases, your child's medicine dose may need to be increased. If Exercise Is a Trigger Exercise might be the only trigger for some kids with asthma. Along with allergens, this is one of the more common triggers. It can be a particular problem in someone whose asthma isn't well managed. But this is one trigger that your child should not avoid because exercise is important for overall health. Don't discourage being active or playing sports. Instead, talk with your doctor about what your child should do before, during, and after exercise. This may include taking medicine before working out or playing a sport. If Reflux Is a Trigger Gastroesophageal reflux is when the contents of the stomach flow backward into the esophagus. Some kids also inhale these contents into the lungs, which can harm airways and make asthma worse. If reflux is a trigger, treating it can help your child's asthma symptoms. Back to Articles Related Articles Asthma Center Asthma keeps more kids home from school than any other chronic illness. Learn how to help your child manage the condition, stay healthy, and stay in school. Read More Do Allergies Cause Asthma? Allergies don't cause asthma, but kids who have allergies are more likely to get asthma. Read More Managing Asthma Asthma control can take a little time and energy to master, but it's worth the effort. Learn more about ways to manage your child's asthma. Read More Asthma Flare-Ups Find out how to deal with — and help prevent — asthma flare-ups ("attacks"), which is when asthma symptoms get worse. Read More Air Pollution and Asthma Ground-level ozone and other air pollutants can trigger asthma flare-ups. But there are steps you can take to minimize your child's exposure. Read More Asthma Center Visit our Asthma Center for information and advice on managing and living with asthma. Read More Asthma Center Asthma means breathing problems. Find out what's going on in the lungs and how to stay healthy, if you have it. Read More Dealing With Asthma Triggers Find out what can make your asthma worse, and what to do about it. Read More Asthma-Safe Homes Here's steps to remove or minimize triggers at home that cause asthma flare-ups. Read More Exercise-Induced Asthma Many kids with asthma have symptoms when they exercise. But with careful management, they usually can do anything their peers can do. Read More Dealing With Triggers: Dust Mites If dust mites make your child's asthma or allergies worse, here's how to limit exposure to them. Read More Dealing With Triggers: Mold If mold makes your child's asthma or allergies worse, learn how to limit exposure to it. Read More Dealing With Triggers: Pollen If pollen makes your child's asthma or allergies worse, learn how to limit exposure it. Read More Dealing With Triggers: Irritants If strong scents, smoke, and smog make your child's asthma or allergies worse, learn how to limit contact with these irritants. Read More Dealing With Triggers: Cockroaches Find out how to limit exposure to cockroaches if they make your child's asthma or allergies worse. Read More Your House: How to Make It Asthma-Safe If you have asthma, you want to breathe easy at home. Find out how in this article for kids. Read More Dealing With an Asthma Flare-Up Asthma flare-ups, or attacks, can be handled, but it's even better if you can prevent them from happening. Find out how to deal with flare-ups. Read More Dealing With Asthma Triggers If you have asthma, certain things may cause you to cough and have trouble breathing. Find out more about asthma triggers in this article for kids. Read More Dealing With Triggers: Pets Do pets make your child's allergies or asthma worse? Here's how to handle it. Read More If I Have Asthma, Can I Keep My Pet? If you have asthma, you're more likely to be allergic to a pet than someone who doesn't have asthma. Find out what you can do. Read More Exercise-Induced Asthma Some people have asthma symptoms only during or after exercise. This is called exercise-induced asthma. Get some tips for coping with it in this article. Read More Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.