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What causes nasal congestion and shortness of breath? 11 possible conditions

See a list of possible causes in order from the most common to the least.


Deviated Septum

The nasal septum is a thin structure, separating the two sides of the nose. If it is not in the middle of the nose, then it is deviated.

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Allergic Rhinitis

Allergic rhinitis, or hay fever, is your body's response to specific allergens. It causes uncomfortable symptoms like sneezing and itchy eyes.

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Cold and Flu Overview

Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared symptoms include headache, cough, sore throat, and more.

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RSV (Respiratory Syncytial Virus) Infection

Respiratory syncytial virus, or RSV, is a common virus that causes infections of the lungs and airways. Common symptoms include fever, wheezing, and bluish skin from oxygen deprivation.

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Swine Flu

Swine flu, also known as H1N1, is a highly contagious virus with symptoms similar to common influenza types. It spreads quickly from person to person, and can linger on tables and surface areas.

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Allergies Overview

This condition is considered a medical emergency. Urgent care may be required.

An allergy is the immune system's response to a foreign substance (allergen) that is not typically harmful to a person's body. This attack response may involve inflammation, sneezing, and a host of other symptoms.

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Allergic Asthma

If you ever have trouble breathing during allergy season, you may have allergic asthma. Allergic asthma is asthma caused by an allergic reaction. It is also called allergy-induced asthma. People with allergic asthm...

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Food Allergy Basics

Food allergies are overblown responses by the immune system to foods that aren't typically harmful - like eggs and peanuts. Continue reading and learn more about food allergies, and how to prevent or treat sever...

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Learn about sarcoidosis and its causes, symptoms, diagnosis, treatment, and potential complications.

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Absence of Gamma Globulin in Blood

Agammaglobulinemia (AGMX) is an inherited immune system disorder. Passed from parent to child, it is also known as Bruton’s agammaglobulinemia, congenital agammaglobulinemia, and X-linked agammaglobulinemia. AGM...

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Leishmaniasis is a parasitic disease caused by the Leishmania parasite found in sand flies.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.