Can Seasonal Allergies Cause Nausea?

Seasonal Allergies Defined

Allergies are caused by an overcompensation in the immune system in response to an allergen. With respect to seasonal allergies, these allergens are things like pollen and mold that are released at only certain times of the year. Most symptoms of seasonal allergies are respiratory and can include itching and watery eyes, nose, mouth and throat. Frequently, people with seasonal allergies can experience nausea. The nausea associated with seasonal allergies is usually not due to the allergen specifically but to the body’s response to the allergen.

Causes of Nausea in Seasonally Allergic People

The most common symptom of seasonal allergies is an increase in mucus production. This usually means runny noses and watery eyes for the seasonal allergy sufferer. Frequently, this excess mucus can run down your throat and into your stomach. The added mucus in the stomach may lead to nausea and even vomiting. In addition, the loss of fluids can lead to dehydration and a nauseous feeling. Finally, seasonal allergies can lead to sinus congestion. When this occurs, inflammation and congestion of the inner ear can impact balance and leave you feeling dizzy and/or nauseous.

Other Causes of Nausea Associated with Seasonal Allergies

Another manner in which seasonal allergies can cause nausea is from allergy medication. This can occur from the medication itself, which may be harsh on a sensitive stomach or from the added dehydration that these medications (which frequently contain decongestants) can cause.