Feline Dysphagia (Difficult Swallowing)
Dysphagia is the medical term used to describe difficulty in swallowing. Dysphagia has many different causes, some of which are treatable and some are not. Diagnosing and treating the problem early can help increase the chances of a positive outcome.
Dysphagia may be a mild problem in some animals, or it may cause extreme distress in some patients. With longstanding dysphagia the cat may loose a lot of weight due to its inability to eat and swallow (despite a normal appetite). Dysphagia may represent a transient local problem, or a severe, systemic illness. The recognition of dysphagia in your cat warrants an immediate examination by your veterinarian to determine the cause and institute appropriate therapy.
General Causes of Difficult Swallowing in Cats
Disorders of the nerves of the head (cranial nerves), especially diseases of the nerves to the tongue (hypoglossal nerve) or muscles of chewing (trigeminal nerve)
Trauma to the jaw, tongue, and other structures of the mouth
Inflammation of the tongue (glossitis), gums (gingivigitis), mouth (stomatitis), or pharynx (pharyngitis)
Dental diseases
Foreign bodies in the mouth or pharynx
Masses or cysts in the mouth or pharynx
Airway diseases that affect the back of the mouth and throat
Cricopharyngeal achalasia, which is an incoordination in the movement of food stuffs from the back of the mouth through the pharynx and into the esophagus
Paralysis of the muscles of chewing from rabies, botulism, or other toxins (rare)
What to Watch For
Drooling, sometimes with blood in the saliva
Gagging
Dropping food from the mouth or the collection of food along one side of the mouth
Repeated attempts at swallowing
Chewing gum motions of the mouth
Coughing
Regurgitation of food
Change in appetite
Weight loss
Pain around the head, mouth and or neck area
Physical deformities of the head and neck
Possible nasal discharge
Possible foul odor from the mouth
Signs of muscle weakness elsewhere in the body
Diagnostic Tests for Dysphagia in Cats
A thorough examination is very important, as some causes of dysphagia may be detectable on the examination. In addition your veterinarian may recommend the following additional tests:
A complete oral examination under sedation
Complete blood count (CBC)
Biochemical profile and urinalysis
Radiographs (X-rays) of the mouth, skull (with teeth) and neck
Chest x-rays if the animal is coughing
Specialized diagnostic tests may be indicated in selected cases and may include the following:
Ultrasound of the pharynx (throat)
Pharyngoscopy (evaluation of the throat with an endoscope)
Fluoroscopic barium swallow (food material filled with barium is observed being swallowed under a video x-ray machine)
Certain hormonal assays, especially for hyperthyroidism
Possible biopsy and cytology of any abnormal masses, cysts or muscles
Electrodiagnostic tests that measure muscle and nerve function
Treatment of Dysphagia in Cats
Treatment of dysphagia is quite variable depending upon the cause. Some animals require supportive care while their primary disease is being treated or is resolving. Supportive care may include the following:
Nutritional support is of paramount importance. A change in food consistency or the position of the patient during feeding may be recommended in some cases. A feeding tube that bypasses the mouth and throat may be indicated, such as a gastrostomy (stomach) tube. Occasionally, parenteral (intravenous) feeding may be indicated, depending on the primary disease process.
Antibiotics may be recommended to combat or prevent bacterial infections.
Specific treatments may include the following:
Surgical correction of any fractures of the jaw and palate, surgical repair of lacerations, and removal of any oral foreign bodies, cysts and masses
Removal of diseased teeth and application of specific remedies for dental disease
Surgical correction or medical therapy of upper airway abnormalities
Medications for certain hormonal problems
Corticosteroids for inflammation of the tissues of the mouth
Home Care
Administer any prescribed medications and dietary recommendations as directed by your veterinarian. If your pet is not improving, and/or if additional clinical signs develop, contact your veterinarian. Animals with weakness or paralysis of the muscles or nerves to the head may take several weeks to return to normal, once appropriate therapy has been instituted. Consistent nursing care at home is very important to their recovery.
