TL;DR: Facial drooping in cats is typically caused by nerve damage and requires a veterinary examination within 24-48 hours to prevent eye complications. Seek emergency care immediately if it is accompanied by a head tilt, circling, or sudden collapse.
What is facial drooping in cats and what are the symptoms?
Facial drooping, often referred to as facial nerve paralysis, occurs when the Seventh Cranial Nerve—which controls the muscles of facial expression—becomes damaged or inflamed. This leads to a loss of muscle tone on one side of the face. You may notice your cat has a saggy lip, an inability to blink, a drooping ear, or is dropping food while eating.
Is facial drooping in cats a medical emergency?
- Urgency Level: Medium. Most cases require a veterinary examination within 24 to 48 hours rather than immediate emergency care.
- Eye Health Risk: Prompt care is necessary because the eye on the affected side may not be able to blink, leading to painful corneal ulcers.
- Emergency Indicators: Seek immediate emergency care if the drooping is accompanied by a head tilt, circling, or sudden collapse.
Why should I take photos or videos of my cat's facial drooping?
- Providing a clear photo or video of your cat in their home environment acts as a vital triage tool for your veterinarian.
- Home documentation captures symptoms at their most natural, whereas stress during a car ride can cause a cat to tense up and mask muscle weakness.
- Visuals help the vet differentiate between nerve issues, ear infections, or other underlying conditions more effectively.
Clinical Context (Merck Veterinary Manual)
Idiopathic facial paralysis in cats results in unilateral or bilateral paresis or paralysis of facial muscles, characterized by an acute onset of inability to blink, drooping ear, drooping upper lip, and drooling. Facial sensation remains intact. Diagnosis is based on clinical features and exclusion of other causes such as ear disease, trauma, and brain-stem lesions. Primary neoplasia, such as squamous cell carcinoma and polyps of the middle ear, can also affect the facial nerve and cause facial drooping; otoscopy with biopsy and histologic examination may be necessary for diagnosis. Ischemic neuromyopathy may also cause facial paralysis. Artificial tear administration may be necessary, and although facial paralysis can resolve spontaneously or be permanent, permanent paralysis may be disfiguring but does not typically affect the quality of life.
Chapter: Neurology
Source: The Merck Veterinary Manual, 11th Edition (Page 1239)