Q: What environmental factors can make asthma worse?
Environmental factors that can make asthma worse include air pollution, dust mites, mold, pet dander, smoke, pollen, and certain chemicals. Pollution from automobile exhaust, industrial processes, and manufacturing plants can worsen the symptoms of asthma. Dust mites, which are microscopic creatures living in bedding, carpets, and other soft furnishings, can cause allergic reactions and exacerbate asthma. Mold, which grows in damp areas, can trigger asthma attacks. Pet dander, which is shed from the skin of furry animals, can cause allergic reactions and worsen asthma symptoms. Smoke from cigarettes, bonfires, or barbecues can irritate the airways and cause asthma attacks. Pollen from plants can also worsen asthma symptoms. Finally, certain chemicals such as cleaning products, aerosols, and fumes can trigger asthma attacks.