Your health care provider will consider both your symptoms and test results to diagnose eosinophilic esophagitis. This will include determining whether you have gastroesophageal reflux disease (GERD).
Tests to diagnose eosinophilic esophagitis include:

During an upper endoscopy, a healthcare professional inserts a thin, flexible tube equipped with a light and camera down the throat and into the esophagus. The tiny camera provides a view of the esophagus, stomach and the beginning of the small intestine, called the duodenum.
Eosinophilic esophagitis is considered a chronic relapsing disease, meaning that most people will require ongoing treatment to control their symptoms. Treatment will involve one or more of the following:
Depending on your response to tests for food allergies, your health care provider may recommend that you stop eating certain foods. Cutting out some foods, such as dairy or wheat products, may help to relieve symptoms and reduce inflammation. Sometimes, it may be recommended to limit your diet even more.
If you experience severe narrowing, known as a stricture, of your esophagus, your provider may recommend dilation. Dilation, also called stretching, can help make swallowing easier. Dilation may be used if steroids are not helpful. Or dilation may be a choice to avoid ongoing use of medication.
If you often have heartburn, these lifestyle changes may help reduce the frequency or severity of symptoms:
If you think you have eosinophilic esophagitis, you're likely to start by seeing your regular health care provider. Your provider may recommend that you see a specialist in treating digestive diseases (gastroenterologist) or an allergist.
Because appointments can be brief, and because there's often a lot of ground to cover, it's a good idea to be well prepared. Here's some information to help you get ready, and what to expect.
Your appointment time is limited, so preparing a list of questions can help you make the most of it. For eosinophilic esophagitis, some basic questions to ask include:
In addition to the questions you've prepared, don't hesitate to ask other questions during your appointment.
Your provider is likely to ask you a number of questions. Being ready to answer them may allow more time later to cover points you want to address.
If you're a parent of a young child, the provider also may ask if your child has trouble feeding or has been diagnosed with failure to thrive.