Is childhood eosinophilic esophagitis (EoE) a hereditary disease?

Eosinophilic esophagitis (EoE) is not classified as a hereditary disease in the traditional sense, where a specific gene is passed directly from parents to children; however, research suggests that genetic factors play a pivotal role in increasing the susceptibility to developing the condition [1]. This means that having family members with this condition may elevate the risk level for a child. The disease is likely caused by a complex interaction between genetic predisposition and the immune system's response to environmental triggers, such as pollen, dust mites, animal dander, or certain types of foods that provoke an allergic reaction in the esophagus [1].

The Nature of the Disease and Associated Factors

Eosinophilic esophagitis is a chronic disease characterized by the accumulation of white blood cells, known as eosinophils, in the lining of the esophagus. This accumulation causes inflammation and tissue damage, leading to swallowing difficulties or the sensation of food getting stuck. In addition to the genetic factor, the likelihood of developing the condition is higher in males, as well as in children suffering from other allergic diseases such as eczema, asthma, and hay fever [1]. For a deeper understanding of this condition, you can view our comprehensive guide on pediatric eosinophilic esophagitis (Arabic).

Diagnosis of the Condition

Diagnosing eosinophilic esophagitis requires medical precision, as symptoms alone cannot be relied upon to confirm the diagnosis due to their similarity to other conditions such as gastroesophageal reflux. The gold standard for diagnosing the disease is performing an upper gastrointestinal endoscopy [1] [2]. During this procedure, which typically takes between 10 and 20 minutes, the physician uses a flexible tube equipped with a camera to examine the esophageal lining for signs of damage or strictures [2]. Most importantly, biopsies (tissue samples) are taken from the esophagus and analyzed in a laboratory to confirm the presence of a high density of eosinophils, which is the only definitive procedure for diagnosis [1] [2].

Available Treatment Strategies

There is no complete cure for eosinophilic esophagitis, so treatment plans focus on controlling inflammation and preventing complications. The approaches used include the following:

• Pharmacological Treatments: These include steroids (often topical) to control inflammation, and proton pump inhibitors (PPIs) to alleviate reflux symptoms. Monoclonal antibodies may also be used for children over 12 years of age [1].
• Dietary Modifications: A physician may recommend an "elimination diet," where common food allergens such as milk, soy, wheat, and eggs are avoided [1]. In cases requiring radical intervention, an "elemental diet" may be used, which relies entirely on amino acid formulas instead of complete proteins [1].

When Should You Go to the Emergency Room?

Although the risks of endoscopy are low, parents should seek emergency medical care immediately if the child notices any of the following signs after the procedure: obvious respiratory difficulties, severe worsening of throat pain or difficulty swallowing, vomiting blood or material that looks like coffee grounds, increased chest or abdominal pain, or the appearance of black, tarry stools, in addition to high fever [2].

Medical references

• Eosinophilic Esophagitis
• Upper GI Endoscopy