Mild hoarseness and swelling that narrows the airway are different situations, however. Laryngeal swelling can increase rapidly and block airflow. If breathing becomes laboured, do not monitor the situation at home on the basis that laryngitis is usually considered mild.
When to see a vet urgently
Go to an emergency vet immediately if your cat has any of the following signs:
- open-mouth breathing at rest;
- severely laboured breathing or a high-pitched breathing noise;
- bluish mucous membranes or collapse;
- difficulty swallowing together with difficulty breathing.
You can find a vet near you.
Overview
A cat's larynx performs several functions: it allows air to pass, helps produce the voice and protects the airways. With laryngitis, inflammation of its lining disrupts these functions, leading to coughing, hoarseness and other uncomfortable symptoms. Laryngitis may be acute or chronic. It is often associated with external irritants or upper respiratory infections.
The larynx lies between the pharynx and trachea. Movement of its cartilage and soft tissues helps keep the airway open during breathing and protect it during swallowing. Inflamed or swollen tissue can alter both voice and breathing. The degree of hoarseness alone does not show how well air is passing through.
A voice change is not always caused by inflammation. A movement disorder of the larynx, known as laryngeal paralysis, can also cause hoarseness, a dry cough and noisy breathing. It is uncommon in cats but is among the possibilities investigated. Gradual progression of symptoms therefore does not establish that this is simply prolonged, ordinary inflammation.
Causes
The most common causes of laryngitis in cats include:
- Infections, whether viral, bacterial or fungal, occurring on their own or as part of cat flu.
- Irritation of the lining by smoke, dust or chemical fumes.
- Allergic reactions involving airway inflammation.
- Mechanical injury to the throat, for example from an accident or collar use.
- Chronic respiratory or heart diseases that increase susceptibility.
Also mention any recent general anaesthesia or procedure around the throat. A breathing tube used during anaesthesia can irritate the larynx, and handling the area may be associated with swelling. Meowing more than usual can also irritate structures involved in producing the voice. This information does not, however, replace assessing breathing.
Risk factors
- Living in dusty, smoky or polluted surroundings.
- A weakened immune system in older or debilitated cats.
- Recent respiratory infections.
- Frequently being outdoors in cold, damp weather.
- A tendency to develop allergies.
There is little research on individual risk factors for laryngitis in cats. The list does not mean that cold or damp conditions explain every case. In practice, investigations consider respiratory infection, inhaled irritants and local injury, for example. The timing of exposure in relation to symptoms helps plan the investigation.
Main symptoms
- Hoarseness, a rough voice or a change in voice.
- Coughing, sometimes dry and persistent.
- Difficulty swallowing food or water.
- Tenderness when the throat area is felt.
- Reduced appetite and activity.
- Difficulty breathing in severe cases.
Stridor is a high-pitched or harsh breathing sound from the upper airway. Breathing in may require more effort than usual. Your cat may extend their head or hold their mouth open to get air. The sound alone cannot establish the precise site or cause of narrowing at home.
Difficulty breathing may also look like retching or an attempt to vomit. If breathing is difficult at the same time, do not wait for a hairball to appear. Asthma, heart failure and fluid around the lungs can also make breathing difficult. Assuming laryngitis does not rule out these possibilities.
If there is a respiratory infection, your cat may also sneeze, have nasal or eye discharge and develop a fever. Signs associated with herpesvirus and calicivirus can overlap. Tell your vet whether other cats at home have similar changes or your cat has recently been in contact with new cats.
Complications and consequences
Without treatment, laryngitis can lead to:
- a chronic form with persistent hoarseness;
- infection spreading to the trachea and bronchi, causing tracheobronchitis or bronchopneumonia;
- severe laryngeal swelling that can create a risk of suffocation, which is rare but dangerous.
A swallowing disorder is assessed separately from hoarseness. If food or saliva comes back through the mouth or nose, the problem may also involve pharyngeal function. In severe swallowing disorders, food or fluid can enter the airways, predisposing to aspiration pneumonia. This is not a consequence of every mild case of laryngitis, but explains why difficulty swallowing needs investigation.
Diagnosis at the vet
Diagnosis is based on:
- a clinical examination and feeling the throat;
- assessment of the history, including contact with other animals, living conditions and possible irritants;
- laboratory tests, including a blood test to identify inflammation or infection;
- rhinoscopy or laryngoscopy when needed.
Laryngoscopy is examination of the larynx using a scope or an instrument designed for the purpose. Rhinoscopy examines the nasal cavity, so the investigations answer different questions. A detailed examination of a cat's larynx usually requires general anaesthesia or other medication planned by the vet. Airway safety is considered before a detailed examination.
If airflow is severely obstructed, it may need to be secured before the cause is fully established. The vet may make an opening in the trachea for a breathing tube. Tracheostomy means creating this airway below the laryngeal narrowing. The procedure allows breathing while the underlying problem is treated.
Other changes around the throat
A nasopharyngeal polyp is a tissue growth that can cause a voice change, noisy breathing and difficulty swallowing. It may lie behind the soft palate and remain hidden during an ordinary look into the mouth. More detailed endoscopy or imaging is used if needed. Narrowing caused by a polyp does not resolve in the same way as simple irritation of the lining.
If your cat also has ear symptoms, a head tilt or changes in balance, mention them at the appointment. A polyp may be associated with ear structures, and the investigation may assess both the pharynx and ears. Examination of removed tissue confirms the nature of the lesion. Owners cannot distinguish a polyp from another mass by the symptoms.
Treatment and recovery
Treatment removes any irritating exposure and addresses the identified underlying cause. Medication prescribed by the vet may reduce inflammatory swelling. Pain is treated to make swallowing and eating easier. Antibiotics are used when there is a bacterial infection or another justified reason; a voice change does not itself determine which medicine is chosen.
Supportive care may be central in a viral respiratory disease. A cat eating poorly or becoming dehydrated may need nutritional and fluid support. If another cause, such as a fungal disease, is identified, medication is chosen for that condition. Persistent nasal discharge, facial swelling and noisy breathing may be reasons to investigate these less common infections too.
The choice of a painkiller, anti-inflammatory medicine or another product is the vet's responsibility. Treatments for different laryngeal diseases are not interchangeable. Paralysis or a mass blocking the airway, for example, may require a procedure. If symptoms continue despite treatment, the diagnosis and investigation plan are reassessed.
Eating and the home environment
Once breathing and swallowing are safe and your cat can go home, soft food may make eating easier. Keep the environment clean and avoid dust and smoke. Your vet may also recommend humidifying the air. These supportive measures follow the instructions given and do not replace treatment of a narrowed airway.
Report a swallowing disorder before trying to give food, water or medicines at home. With severe pharyngeal dysfunction, a feeding tube may be needed to provide nutrition. This decision is based on the vet's assessment of which route is safe. Food coming back through the mouth or nose is not simply a sign of fussy eating.
Avoid exertion and unnecessary handling for a cat with breathing difficulties. Stress and physical effort can worsen the effects of airway narrowing. Do not try to confirm the diagnosis at home by pressing on the throat or forcing your cat's mouth open. During breathing difficulties, the priority is to arrange veterinary treatment quickly.
After discharge, monitor breathing effort, voice changes, swallowing and the amount of food eaten. Report any new failure to eat, worsening breathing or deterioration in general condition. Reduced meowing alone is not enough to measure recovery if your cat is otherwise not behaving normally. The need for further investigations depends on the cause found.
Prevention
- Keep the air clean at home and avoid smoking near your cat.
- Treat viral and bacterial infections promptly.
- Support your cat's immune system with complete nutrition and preventive care.
- Ensure collars and harnesses are used safely.
Contagious respiratory diseases are prevented through a vaccination programme suited to your cat and good hygiene. Vaccination can reduce disease severity but does not prevent every infection. If one cat becomes ill, agree with your vet how to reduce exposure for the others. Not all hoarseness is infectious, however, because local irritation can also cause it.
What it means for owners
Laryngitis is not always a disease in its own right: it may signal an infection or allergy. Owners should pay attention to coughing and hoarseness, because early veterinary care helps avoid complications. Treatment usually involves removing the cause and providing supportive care for symptoms, with specific medication when infection is present.
Do not overlook coughing and hoarseness. A new or persistent voice change needs investigation, and difficulty breathing is an urgent symptom. Do not postpone examination simply because your cat has no nasal discharge or other signs of cat flu.
Note: this material provides general information and does not replace treatment advice. Contact a vet when you notice the first symptoms.
Frequently asked questions
Can a cat lose their voice because of cat flu?
A respiratory infection can involve laryngitis and a voice change. However, another disease of the larynx or pharynx may also cause hoarseness. If the change persists or is accompanied by difficulty swallowing or breathing, your cat needs examination.
Does laryngitis always need antibiotics?
Not automatically. Treatment targets the cause identified and the severity of symptoms. Irritation, viral infection, bacterial infection and mechanical airway narrowing are different situations, so the vet chooses the treatment needed.
Can steam or soft food replace veterinary care?
Humidified air and soft food may be part of supportive care for a mild condition that has been examined. They do not open a severely narrowed airway. A cat breathing with an open mouth or showing clear difficulty breathing needs urgent treatment.
This article is for general information only and is not a guide to treatment. If you notice the first signs of illness, contact your vet.
Paw4care editorial team
Sources
- Laryngeal Disorders in Cats, Merck Veterinary Manual, accessed 2026-11-02.
- Respiratory Infections, Cornell Feline Health Centre, accessed 2026-11-02.
- Dyspnea (Difficulty Breathing), Cornell Feline Health Centre, accessed 2026-11-02.
- Nasopharyngeal Polyps, American College of Veterinary Surgeons, accessed 2026-11-02.
- Disorders of the Pharynx in Cats, Merck Veterinary Manual, accessed 2026-11-02.
- Laryngeal Disorders in Animals, Merck Veterinary Manual, accessed 2026-11-02.