Gastroesophageal reflux disease (GERD) is a very common digestive disorder today, which can lead to many dangerous complications for patients, such as esophagitis, malnutrition, and respiratory complications. Among these, sinusitis is a frequently encountered ENT (ear, nose, and throat) complication of GERD that should not be overlooked. Prompt treatment is crucial to prevent the condition from progressing into a chronic state.