Asthma vs. Allergies: How To Tell the Difference (and Why It Matters)

Knowing how allergy symptoms differ from asthma symptoms can help you better manage both conditions.

A man uses his inhaler.

If you have asthma and still deal with sneezing, itchy eyes, or a runny nose, allergies could be part of the picture. Understanding how asthma and allergies differ — and how they overlap — can help you feel more in control. 

Different causes, different reactions 

  • Asthma is a lung condition that causes airway inflammation. Triggers include cold air, exercise, illness, and air pollution. 

  • Allergies are immune system reactions to things like pollen, dust, or pet dander. They often affect the eyes, nose, or skin. 

How symptoms can overlap 

Both conditions can cause coughing, wheezing, or shortness of breath, especially if you have allergic asthma. That’s when allergens trigger asthma symptoms. 

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Why this matters for your care 

  • Asthma is usually managed with inhalers or controller medications. 

  • Allergies may need antihistamines, nasal sprays, or allergen avoidance. 

  • Treating both can reduce flare-ups and improve your breathing overall. 

Not sure what’s triggering your symptoms? Track when they show up and talk to your provider. A clearer picture can lead to faster relief.