“Not every frightening reaction after eating is anaphylaxis,” Dr. Talal Nsouli said on Friday, Nov. 13, 2026, regarding a chronic swallowing disorder often mistaken for severe food allergies.
Two new studies reveal that a condition called eosinophilic esophagitis, or EoE, leads to multiple emergency room visits and years of incorrect treatment while mimicking severe food allergies, US News & World Report reported. Researchers say diagnoses have increased sevenfold since 2009.
EoE is a chronic condition triggered by foods such as dairy and wheat. Unlike a typical food allergy that causes immediate anaphylaxis, EoE causes a buildup of white blood cells in the esophagus, which is the tube connecting the mouth to the stomach. This reaction causes swelling and irritation that eventually makes swallowing difficult and causes food to get stuck.
In one study of 29 patients initially suspected of having severe food allergies, all actually had EoE. On average, it took more than five years for those patients to receive the correct diagnosis.
“Not every frightening reaction after eating is anaphylaxis,” said Dr. Talal Nsouli of The Watergate and McLean Allergy and Asthma Centers and MedStar Georgetown University School of Medicine in Washington, D.C.
A second study found that EoE was most often first diagnosed in teenagers and people in their 40s. The condition appeared more commonly in people who already managed other allergic conditions, including asthma, eczema, and food allergies.
Medical experts urge anyone experiencing recurring swallowing problems alongside negative tests for food allergies to speak with a physician. Early diagnosis and treatment help prevent lasting damage to the esophagus.
Findings presented at medical meetings are considered preliminary until published in a peer-reviewed journal, according to HealthDay TV on Nov. 13, 2026.
Eosinophilic esophagitis, or EoE, is a chronic condition triggered by foods like dairy and wheat that causes a buildup of white blood cells in the esophagus. This buildup leads to swelling and irritation, which can make swallowing difficult over time.
Unlike a typical food allergy that triggers immediate anaphylaxis, EoE causes a buildup of white blood cells in the esophagus rather than a sudden systemic immune reaction.
Experts recommend that individuals with recurring swallowing problems who test negative for food allergies speak with their physician to seek early diagnosis and prevent lasting damage to the esophagus.
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