What causes headache, nausea and wheezing? 2 possible conditions

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


Flu Overview

Learn about flu causes, symptoms and treatments.

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