Learn everything you need to know about anaphylactic shock—its symptoms, causes, risks, and treatments. Be prepared in emergency situations.

While asthma, a chronic lung disease in which swelling and inflammation of the airways in the lungs make it difficult to breathe, often starts during childhood, it can also begin during adulthood. Find out the causes, symptoms, and treatment options for adult-onset asthma.

Nasal polyps are small, painless, noncancerous growths that develop in the nasal passages. Learn more about what causes nasal polyps as well as the symptoms, diagnosis, treatment, and prevention.

An EpiPen is an auto-injector device that administers epinephrine, a medication that can stop the symptoms of anaphylaxis. Learn how to use an epinephrine auto-injector properly.

Peanut allergy is a common food allergy in children and can cause a severe reaction within minutes to hours. Learn about the symptoms of a peanut allergy and treatment options for children.

Benadryl is very effective in relieving sneezing, runny nose, and itchy, watery eyes. However, taking Benadryl with certain other medications can result in potentially dangerous drug interactions.

If you suffer from seasonal allergies, saline nasal sprays are a good option to relieve symptoms. Find out how to use a saline spray properly.

Many medications can give you relief from allergy symptoms. Nasal sprays provide faster symptom relief for nasal symptoms. Learn which type of nasal spray is best for spring allergies.