The best treatment for esophageal hypersensitivity depends on the type of esophageal hypersensitivity the patient has. Medical treatment may entail medication such as nerve modulators and acid medication. Psychological and complementary/ alternative therapies have also been used. In some cases, the doctor may even recommend surgery.
The most crucial thing is to ensure that the diagnosis and sub-type classification is correct. This will require the patient to undergo a 24 hour combined pH impedance study.
The test measures acid and non-acid reflux episodes over a 24 hour period, and correlates this with the symptoms. This is a very specialized and niche test, and is not widely available. It can only be done in the larger public hospitals, or a proper digestive group practice.
Do check with the doctor who made the diagnosis whether all the appropriate tests have been done, and clarify the exact type of esophageal hypersensitivity that you have.