Nose and Sinuses

Asthma and Chronic Rhinosinusitis: Why They Can Occur Together

Learn how upper- and lower-airway inflammation may be connected and why coordinated care can improve symptom control.

Illustration connecting the nasal passages and lungs

The nose, sinuses, and lungs are part of a connected airway. Some people with asthma also develop chronic rhinosinusitis, nasal polyps, or allergic rhinitis. When symptoms occur together, treatment planning can benefit from looking at the whole airway rather than addressing each complaint in isolation.

How the conditions may be linked

Inflammation can affect both the nasal passages and the lower airways. Nasal blockage, reduced smell, postnasal drainage, wheeze, cough, and shortness of breath may occur in overlapping patterns, but not every symptom has one cause. Medicines and triggers that help one condition may not adequately control the other.

What information helps assessment

Tell the clinician about asthma control, night waking, rescue inhaler use, smell changes, prior sinus treatment, nasal polyps, and reactions to medicines. ENT and respiratory teams may coordinate endoscopy, allergy assessment, lung testing, or other investigations according to symptoms and treatment history.

Building a coordinated plan

Treatment may include regular nasal anti-inflammatory treatment, saline irrigation using safe water, asthma controller therapy, trigger management, and selected procedures or specialist medicines for severe disease. Do not alter inhalers or start aspirin-related challenges yourself. Worsening breathlessness needs the asthma action plan or urgent care according to severity.

Frequently asked questions

Will sinus treatment improve asthma? It may help some people, but the effect varies and asthma still needs its own monitoring and treatment.

Are nasal polyps related to asthma? They can coexist, particularly in some inflammatory conditions, but their presence does not by itself determine asthma severity.

When is urgent care needed? Severe breathing difficulty, blue lips, confusion, or poor response to prescribed rescue treatment requires emergency help.

Related reading

Sources and further reading

Related research involving Dr. Mohannad Almomani

Dr. Mohannad Almomani is listed as a co-author of this peer-reviewed narrative review on the nasopharyngeal microbiome and ENT inflammation. It offers broader research context for the relationship between the upper-airway microbiome and inflammatory conditions; it does not establish a diagnosis or treatment recommendation for an individual patient.

This article provides general information and does not replace personalised medical advice, examination or diagnosis. Discuss your individual concerns with a qualified healthcare professional.

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