Pollen enters Kai's nose, and Kai's immune system overreacts even though pollen is usually harmless. What is the pollen called?

During an allergic reaction, the body releases a chemical that can contribute to itching, sneezing, and swelling. What is this chemical called?

What immune-system protein recognizes and binds to a specific antigen?

A person's immune system treats a normally harmless substance as a threat and causes symptoms. What condition does this describe?

During an asthma attack, what happens to the airways in the lungs?

During an asthma flare-up, muscles around the airways tighten. How does this change breathing?

At rehearsal, Sam starts wheezing after strong perfume is sprayed. Sam uses a quick-relief inhaler, but the wheezing gets worse and Sam can barely speak. What should happen next?

Which airway change can make an asthma attack more difficult to breathe through?

During an asthma attack, the lining of the airways may produce extra mucus. What effect can the mucus have?

Each spring, Nia sneezes and has itchy eyes after walking outside on windy days, but the symptoms fade indoors. What is the most likely trigger?

Drew wheezes when running outdoors on cold mornings but not when exercising in the school gym. What is the likely asthma trigger?

Whenever Priya visits a home with a cat, Priya coughs and wheezes. The symptoms are absent at home, where there are no pets. Which trigger best fits this pattern?

Luis coughs and wheezes after spending time in a damp basement with a musty smell. Which trigger is most likely involved?

Ava's asthma symptoms begin when someone smokes in the car, then improve after Ava leaves the car. What is the likely trigger?

After eating a food known to cause a severe allergy, Rowan develops trouble breathing and widespread hives. What should Rowan do under a severe-allergy emergency plan?

Ava has a daily asthma controller medicine prescribed and feels well today. What should Ava do?

At soccer practice, Malik begins wheezing, and Malik's asthma action plan lists a quick-relief inhaler for these symptoms. What should Malik do?

A healthcare provider changes Zoe's asthma medicine. What is the best way for Zoe to keep day-to-day instructions current?

Mason checks a device each morning and compares the result with the personal-best range in an asthma action plan. What is Mason using?

For two weeks, Elena records coughing, wheezing, activities, and nearby irritants before sharing the notes at an asthma checkup. How can this help manage asthma?