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ACAAI is a professional medical association of more than 6,000 allergist-immunologists and allied health professionals. Find out more about us.… Allergy Resources View All Featured Video https://youtu.be/6SUIDoUyAT0 Does anaphylaxis look different in infants and toddlers as compared to older patients? Allergist Michael Pistiner, MD, explains…

Anaphylaxis may be a little bit different to pick up on, to recognize because infants and toddlers, they can't… English Transcript Allergist Michael Pistiner, MD: Yeah, it does. Anaphylaxis in an infant or a toddler, an infant is a kid less than age one.…

If you develop a rash, hives or difficulty breathing after taking certain medications, you may have a drug allergy.… OverviewAs with other allergic reactions, these symptoms can occur when your body’s immune system becomes sensitized to a substance in the medication, perceives it as a…

Allergies, including allergic rhinitis, affect an estimated 40 million to 50 million people in the United States. Some allergies may… Allergies exist in many different forms. You might be surprised to learn how many different types of allergies there are. Find out more about the…

About 10% of people in the US believe they have a penicillin allergy, but fewer than 10% of those people… What Is a Penicillin Allergy? Penicillin is one of the most popular antibiotic drugs in the world. It was discovered in 1928 by scientist Alexander…

Welcome to the ACAAI Clinical Trial Resources While the ACAAI does not endorse these trials, we do encourage clinicians and… Welcome to the ACAAI Clinical Trial Resources While the ACAAI does not endorse these trials, we do encourage clinicians and their patients to partake in…

If your nose gets stuffy or begins to run after eating meat, or you become nauseated or develop a rash,… Overview Did you know that a bite from the Lone Star tick can trigger a meat allergy in some people? A growing number of people…

Información acerca del asma Esta hoja informativa explica cómo controlar los síntomas del asma para vivir una vida activa y… Información acerca del asma Esta hoja informativa explica cómo controlar los síntomas del asma para vivir una vida activa y saludable. Información fundamental acerca de…

If your nose gets stuffy or begins to run after eating meat, or you become nauseated or develop a rash,… Resumen ¿Sabía que la picadura de la garrapata estrella solitaria puede desencadenar una alergia a la carne en algunas personas? Un número creciente de personas…

Understanding the Type 2 Inflammation Connection Helping your patients with allergic rhinitis, asthma, eczema, CRSwNP, EoE and food allergies get… Understanding the Type 2 Inflammation Connection Helping your patients with allergic rhinitis, asthma, eczema, CRSwNP, EoE and food allergies get relief SUPPORTED BY: Rhinorrhea.…

There's a strong genetic component to having allergies. If you have a parent who has nasal allergies, you're about 50%… English Transcript Allergist Kathleen May, MD: Well, we know there's a strong genetic component to having allergies. So, if you have a parent who…

The ACAAI is a professional medical organization of more than 6,500 allergists-immunologists and allied health professionals.… Members live and practice throughout the United States and internationally. The College fosters a culture of collaboration and congeniality in which its members work together, and with others, toward…

The first-line treatment for anaphylaxis is epinephrine (adrenaline).… OverviewA food allergy reaction can cause symptoms that range from mild to life-threatening. In the United States, food allergy is the leading cause of severe, life-threatening allergic reactions (anaphylaxis) outside the hospital setting. People who have previously experienced only…

"How is it possible that my allergies are getting worse with each year?" We've found that that's actually true.… English Transcript Allergist Jonathan Olsen, MD: I have quite a few patients that come in and they feel like they're losing their mind. They're like,…

An immunologist is a doctor who specializes in the immune system. They figure out if your immune system is too… Everyone gets sick now and then—but if you or your child are getting sick more often than usual, or symptoms don’t improve with normal treatment,…

Chronic hive symptoms are generally the same as “short-lived” hive symptoms but appear at least twice a week and last… OverviewHives, also known as urticaria, affect about 20% of people at some time during their lives. It can be triggered by many substances or situations…

Overview Chronic rhinosinusitis with nasal polyps (CRSwNP) is a condition that affects your nose and sinuses. It happens when the… OverviewChronic rhinosinusitis with nasal polyps (CRSwNP) is a condition that affects your nose and sinuses. It happens when the lining of your sinuses becomes swollen…

Resumen La rinosinusitis crónica con pólipos nasales (CRSwNP, por sus siglas en inglés) es una afección que afecta la nariz… Resumen La rinosinusitis crónica con pólipos nasales (CRSwNP, por sus siglas en inglés) es una afección que afecta la nariz y los senos paranasales. Esto…

When the first signs of spring hit, it’s tempting to open windows for fresh air. However, that can make allergy… ARLINGTON HEIGHTS, Ill. (March 4, 2026) – Longer days and more sunshine often signal the arrival of spring. But as temperatures begin to rise across…

Patients often ask what the best over-the-counter medicine is, and they think it's going to be Benadryl or diphenhydramine. Not… English Transcript Allergist Maureen Petersen, MD: Patients often ask what the best over-the-counter medicine is, and they think I'm going to say Benadryl or…