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Regurgitation refers to the process in which the dog's stomach contents (i.e., food) move backwards up the esophageal track and into the mouth. This medical condition can be congenital (inherited) or acquired from a variety of causes. Fortunately, modifications to the animal's diet, in conjunction with medication, will correct the condition.

Regurgitation can occur in both dogs and cats. If you would like to learn how this medical disorder affects cats, please visit this page in the PetMD health library.

Symptoms

Common symptoms associated with regurgitation include:

• Fever
• Lethargy
• Vomiting
• Coughing
• Weight loss
• Runny nose
• Difficulty swallowing
• Bad breath (halitosis)
• A ravenous appetite
• Swelling in the neck
• Increased breathing noises

Causes 

Regurgitation can occur in any breed, although there are several that are pre-disposed to the condition, including the Wire Fox Terrier, Miniature Schnauzer, Great Dane, German Shepherd, Irish Setter, Labrador Retriever, Newfoundland, and Chinese Shar-Pei.

Medical problems which can cause regurgitation include:

• Problems with the throat, often present at birth
• Congenital problems with the espophageal tract
• Acquired problems with the throat that can involve cancer, foreign bodies present, rabies, poisoning, and muscle disease (myopathy)
• Acquired esophageal disease that can develop from an enlarged esophagus, tumor, cancer, hiatal hernia, narrowing of the esophagus, and problems with the automatic nervous system

Diagnosis

First, your veterinarian will determine whether vomiting alone caused the symptoms associated with regurgitation. If the condition has been prolonged, an examination of the throat area will be performed to determine the extent of long-term damage. X-rays or other forms diagnostic imaging may also be used to examine internally for damage.

Treatment

Experimentation with the dog's diet will likely be undertaken to see if the condition subsides with modifications. In most cases, the regurgitation will require ongoing therapy.

Living and Management

Ongoing administration of any necessary medications, as well as diet management, will be important for managing this condition.

Prevention

There are a variety of medications that can help prevent regurgitation, as well as antibiotics that can help with any symptoms or signs of pneumonia, which is also commonly present in cases of regurgitation.