- Nasal causes - GIT - Neural - Other (eg. medication)

1. Mohammed A. Alawad

2. Chronic conditions, Such as:
Deviated septum
Nasal polyps
Sinusitis
Block nasal passages
— Can increase the likelihood of the gag reflex.
>change in the function

3. Chronic problems of the , Such as:
Alcoholism
Carcinoma of the stomach
Peptic ulcer
Cholecystitis

4. ACID REFLUX
PEPSIN

6. Chronic problems of the may:
• Increase
• Lower the of the oral cavity
• Contribute to nausea and gagging
In order for the neuron to generate an action
potential the membrane potential must reach
the threshold of excitation.
Less threshold more activation
*initiation*

7. Inflammation of the pharynx. This condition is common in the person
who drinks and smokes excessively. Prolonged smoking?
Medications if they produce nausea as a side effect.
Diaphragmatic hernia

9. Hassaballa et al, Principles of complete
denture prosthodontics. 2nd ed,
2014 PAGE 156