Gastroesophageal reflux disease (GERD) and nasal discharge reflux are usually not directly related. GERD is caused by excessive gastric acid secretion due to chronic gastritis and gastric ulcers in patients, which refluxes into the esophagus and throat, causing reflux esophagitis. Nasal discharge reflux, on the other hand, is mainly related to chronic sinusitis in patients, both of which can cause inflammation and discomfort in the patient's throat. For patients with GERD, the main treatment involves controlling acid suppression through medication. Common medications include proton pump inhibitors and comprehensive gastric acid relaxants. Additionally, for patients experiencing nasal discharge reflux, diagnosis is primarily through nasal endoscopy and paranasal sinus CT scan. For patients with sinusitis, treatment usually requires medications and surgery to open the sinus passages to improve symptoms and achieve healing.