What Causes Gagging While Brushing Teeth?
Disease description:
I feel nauseous and experience dry heaving every time I brush my teeth, but this never happened before. What could be causing this? Could you please explain why brushing teeth triggers dry heaving?
Doctor's answer (1)
Dr. Xu Gang
Gagging while brushing teeth may result from stimulation of the pharyngeal mucosa—particularly the mucosa at the base and posterior part of the tongue—triggering a neural reflex that leads to coughing, nausea, or vomiting. Nausea during toothbrushing may also indicate gastroesophageal reflux disease (GERD), which commonly presents with symptoms such as nausea, acid reflux, and belching—especially after meals. If patients are concerned, they should promptly seek medical evaluation and treatment at a hospital.
