Paralyzed, permanently visible tongue
Also known as: Hanging Tongue Syndrome · Zungenlähmung · Glossoplegia · Hängende Zunge · Hypoglossal nerve paralysis
Overview
What it is
This condition involves a paralyzed or structurally abnormal tongue that permanently hangs out of the dog's mouth. It is caused by damage to the nervous system, specifically the hypoglossal nerve which controls tongue movement, or by developmental issues in the jaw structure. Because it is a physical condition diagnosed through a clinical exam, there is no direct genetic test for it.
How it presents
Owners will notice the dog's tongue constantly protruding from the mouth, which can lead to a dry, inflamed tongue tip and difficulty eating or drinking. Depending on whether the cause is congenital or acquired through injury, symptoms can be present from birth or appear at any age.
Treatment
While a complete cure is rarely possible, the condition is managed lifelong through daily care to keep the tongue moist and special feeding adjustments. Lifetime management and associated veterinary care typically cost between 500 and 3000 EUR.
How it's tested
Affected breeds
Treatment cost
Estimated range of typical treatment cost. Actual cost depends on severity, clinic and region.
Frequently asked
What is Paralyzed, permanently visible tongue?
This condition involves a paralyzed or structurally abnormal tongue that permanently hangs out of the dog's mouth. It is caused by damage to the nervous system, specifically the hypoglossal nerve which controls tongue movement, or by developmental issues in the jaw structure. Because it is a physical condition diagnosed through a clinical exam, there is no direct genetic test for it.
How is Paralyzed, permanently visible tongue tested?
Various clinical and genetic tests are used depending on the breed and presentation.
Which breeds are most affected?
Most commonly affected: Japanese Chin, King Charles Spaniel, Pekingese.