From Dog

Regurgitation is the expelling of digestive contents from the stomach or upper alimentary tract, usually containing undigested food.

This distinguishes it from vomiting, which is usually a sign of more systemic illness such as food poisoning, gastroenteritis, motion-sickness, etc.

Diseases associated with this condition include:

  • Oral diseases
- Necrotizing sialometaplasia
- Cricopharyngeal achalasia
  • Esophageal disease
- Esophagitis
- Megaesophagus
- Gastroesophageal intussusception
- Vascular ring anomaly
- Hiatal hernia
- Esophageal diverticula
- Peritoneopericardial hernia
  • Gastric diseases
- Gastritis
- Pyloric stenosis
  • Neuromuscular disorders
- Myasthenia gravis
- Polyneuropathy
- Dysautonomia