Abdominal Pain
One of the less-common symptoms associated with seasonal allergies is abdominal pain. There are a few ways in which seasonal allergies can cause stomachaches. First, the nose and throat become irritated when you have seasonal allergies. This irritation can lead to inflammation, which can cause the stomach muscles to tense up. Some people with seasonal allergies also experience nausea and vomiting. All these symptoms can contribute to stomach pain.
Another way seasonal allergies can cause stomach pain is by triggering an inflammatory response in the gut. When the gut is inflamed, it can cause various symptoms, including abdominal pain, diarrhea, bloating, and gas.
Seasonal allergies can trigger this inflammatory response in two ways. When the lining of your nose and throat becomes inflamed, it can increase the production of a substance called histamine. The gut also produces histamine. And when there’s too much of it in your system, it can trigger an inflammatory response. Secondly, some medications used to treat seasonal allergies, such as antihistamines, can irritate the gut lining, leading to inflammation.
