When you have asthma, certain things can make your symptoms worse. These things are called triggers.
Things that you're allergic to can trigger your asthma. They may include:
- Dust mites. These are tiny, nearly invisible creatures. They live in bedding, carpet, and furniture.
- Cockroach droppings.
- Pet dander. Dander is loose skin cells (like dandruff) from dogs and cats.
- Indoor mold.
Your asthma can be triggered by other things too, such as:
- Colds, the flu, and sinus infections.
- Cigarette smoke, air pollution, and fumes from gas, oil, or kerosene heaters.
- Exercise. Many people have symptoms when they exercise.
- Dry, cold air.
- Medicines, such as aspirin or beta-blockers.
- Hormones, including those involved in pregnancy and menstrual periods. A woman's symptoms may change just before or during her period.
Current as of: November 14, 2022
Author: Healthwise Staff
John Pope MD - Pediatrics
E. Gregory Thompson MD - Internal Medicine
Adam Husney MD - Family Medicine
Mary F. McNaughton Collins MD, MPH - Internal Medicine