Is Laryngitis Contagious? Causes, Symptoms & Prevention

Laryngitis is not always contagious. Whether it can spread from one person to another depends on what caused the inflammation of the larynx, or voice box. Viral infections such as the common cold and flu are common causes of acute laryngitis and can spread between people. Laryngitis caused by voice overuse, acid reflux, allergies, smoke, or other irritation is not contagious.

If laryngitis is caused by an infection, the infection may spread through close contact, coughing, sneezing, or other exposure to respiratory germs. Symptoms can include hoarseness, temporary voice loss, sore throat, dry cough, and throat irritation. Understanding the cause of laryngitis can help you determine whether you may be able to spread the underlying infection to others and when visiting emergency rooms in Orange County may be appropriate.

When Is Laryngitis Contagious?

Laryngitis is more likely to be contagious when it develops as part of a respiratory infection. Viral infections are the most common infectious cause of acute laryngitis, including viruses associated with colds and flu. Other respiratory viruses can also cause laryngitis.

Viral Laryngitis

Viral infections are the most common cause of acute laryngitis. A person may develop laryngitis while experiencing a cold, flu, or another respiratory infection. The virus can spread to other people even though laryngitis itself is the inflammation occurring in the voice box.

If you have viral laryngitis along with symptoms such as coughing, sneezing, congestion, fever, or a sore throat, taking precautions around other people can help reduce the spread of the underlying infection.

Bacterial Laryngitis

Bacteria can also cause laryngitis, although bacterial infections are less common than viral causes of acute laryngitis. When bacteria are responsible, the underlying bacterial infection may be contagious depending on the specific organism and how it spreads.

Because antibiotics do not treat viral infections, treatment depends on identifying the cause. Mayo Clinic notes that antibiotics generally do not help laryngitis because most cases are viral, although a healthcare professional may prescribe them when a bacterial infection is responsible.

Noninfectious Laryngitis

Laryngitis caused by irritation or voice strain is not contagious. Repeatedly shouting, singing, or speaking loudly can strain the vocal cords and cause inflammation without an infection. Acid reflux, allergies, smoke, and chemical fumes can also irritate the larynx.

In these situations, you cannot spread laryngitis to another person through coughing, talking, sharing food, or close contact because there is no infectious organism causing the condition.

What Are the Symptoms of Laryngitis?

Laryngitis primarily affects the voice, but it can also cause several throat and respiratory symptoms. The symptoms can vary depending on the underlying cause and whether an infection is present. Common symptoms include:

Hoarseness: The voice may sound rough, strained, weak, breathy, or different from normal.
Temporary voice loss: Some people may temporarily lose their voice or have difficulty producing normal sounds.
Sore throat: Inflammation of the larynx can occur with throat discomfort, soreness, or irritation.
Dry throat: The throat may feel dry or uncomfortable, particularly when laryngitis is associated with irritation.
Dry cough: Laryngitis can cause a dry cough or an urge to cough repeatedly.
Throat irritation: Some people experience a tickling or raw sensation in the throat.
Frequent throat clearing: Irritation can create an urge to clear the throat, although repeated throat clearing can further irritate the vocal cords.

When an infection causes laryngitis, other symptoms may occur depending on the infection, including fever, fatigue, congestion, cough, or feeling generally unwell. If these symptoms become severe or concerning, visiting the nearest emergency room may be appropriate.

What Causes Laryngitis?

Laryngitis can develop from an infection or from irritation and strain affecting the larynx. Common causes include:

Viral respiratory infections such as colds and flu.
Less commonly, bacterial infections.
Repeated shouting, singing, or speaking loudly.
Smoke and secondhand smoke.
Chemical fumes or other airborne irritants.
Allergies.
Acid reflux or gastroesophageal reflux disease (GERD).
Chronic sinus problems and postnasal drip.

Because these causes are different, not every person with laryngitis is contagious. Identifying the underlying cause is important when determining whether precautions around other people are necessary.

How Long Is Laryngitis Contagious?

There is no single contagious period for laryngitis because the condition can have different causes. If laryngitis is caused by a contagious respiratory infection, the period during which you can spread the infection depends on the specific virus or bacteria involved.

For example, someone with laryngitis caused by a cold or flu may be contagious because of the underlying respiratory infection rather than because laryngitis itself spreads. If laryngitis is caused by voice overuse, reflux, allergies, smoke, or another noninfectious trigger, there is no contagious period.

If you have symptoms of a respiratory infection, limiting close contact with others, practicing good hand hygiene, and following appropriate infection-control guidance can help reduce transmission.

How Does Contagious Laryngitis Spread?

When laryngitis is caused by a contagious respiratory infection, the underlying virus or bacteria can spread through exposure to infectious respiratory droplets or close contact, depending on the specific infection. People can also become infected after touching contaminated surfaces and then touching their mouth, nose, or eyes with some respiratory infections.

Common precautions include:

Wash your hands: Regular handwashing can reduce the chance of spreading respiratory germs.
Cover coughs and sneezes: Cover your mouth and nose when coughing or sneezing to reduce exposure to respiratory droplets.
Avoid sharing personal items: Avoid sharing cups, utensils, or other items that may have contact with respiratory secretions.
Limit close contact when sick: Staying away from others while experiencing an infectious illness can help reduce transmission.
Avoid touching your face: Keeping your hands away from your eyes, nose, and mouth can reduce opportunities for germs to enter the body.
Clean frequently touched surfaces: Regular cleaning can help reduce exposure to infectious germs in shared environments.

These precautions are particularly important when laryngitis occurs with symptoms of a cold, flu, or another contagious respiratory infection.

How Is Laryngitis Diagnosed?

Laryngitis can often be identified based on symptoms and a medical history. A healthcare professional may ask when the voice changes began, whether you have other symptoms, whether you have recently had a respiratory infection, and whether you have been exposed to irritants or used your voice excessively.

If symptoms persist or there are concerns about another condition affecting the vocal cords, additional evaluation may be necessary. Persistent hoarseness can have causes other than acute laryngitis, so ongoing voice changes should be evaluated by a healthcare professional. Mayo Clinic recommends medical evaluation when hoarseness lasts two to four weeks.

How Is Laryngitis Treated?

Treatment depends on the cause of laryngitis. Acute laryngitis caused by a viral infection often improves on its own, while treatment for chronic laryngitis focuses on addressing the underlying cause. Voice rest, fluids, and humidified air may help relieve symptoms.

Consider these measures:

Rest your voice as much as possible.
Drink enough fluids to help prevent throat dryness.
Use a humidifier if the air is dry.
Avoid smoking and secondhand smoke.
Avoid shouting, singing, or prolonged loud talking.
Address acid reflux if it contributes to symptoms.
Follow medical advice if a bacterial infection or another underlying condition is identified.

Antibiotics generally do not help viral laryngitis. They may be prescribed when a healthcare professional determines that a bacterial infection is responsible.

How Can You Prevent Contagious Laryngitis?

You cannot prevent every case of laryngitis because some cases result from noninfectious causes such as voice strain or reflux. However, reducing exposure to respiratory infections and protecting your vocal cords may lower the risk.

Consider these habits:

Wash your hands regularly with soap and water.
Avoid close contact with people who are sick when possible.
Cover your mouth and nose when coughing or sneezing.
Avoid sharing drinks and eating utensils with someone who is sick.
Stay away from cigarette smoke and other respiratory irritants.
Drink enough fluids to keep your throat from becoming excessively dry.
Avoid frequent shouting or prolonged loud speaking.
Follow recommended measures for preventing respiratory infections.

If you already have symptoms of an infectious respiratory illness, taking precautions around other people can help reduce the chance of spreading the underlying infection.

When Should You Be Concerned About Laryngitis?

Most cases of acute laryngitis are short-lived and improve with supportive care. However, some symptoms require medical evaluation, particularly when they indicate difficulty breathing, swallowing problems, or a more serious infection.

Seek medical attention if you have:

Hoarseness that persists for two to four weeks.
Significant or worsening throat pain.
A fever that does not go away.
Difficulty swallowing.
Difficulty breathing.
Coughing up blood.
Other symptoms that are severe or continue to worsen.

Children with laryngitis-like symptoms require particular attention when they develop noisy breathing, a barking cough, drooling, difficulty swallowing, trouble breathing, or fever because these symptoms can occur with conditions such as croup or epiglottitis.

When To Go To The ER

Most cases of laryngitis do not require emergency treatment, but severe breathing or swallowing problems can indicate a more serious airway condition. Seek emergency medical care if you or your child develops:

Difficulty breathing: Trouble getting enough air can be a sign of significant airway swelling or another serious condition.
Noisy breathing: A high-pitched sound when breathing, known as stridor, can indicate narrowing of the upper airway.
Severe difficulty swallowing: Difficulty swallowing can occur with more serious throat or airway conditions and requires prompt evaluation.
Drooling: Excessive drooling combined with difficulty swallowing can be a warning sign of a serious airway problem.
Coughing up blood: Blood with coughing should receive prompt medical evaluation.
Persistent or severe fever: A fever that does not resolve, particularly with worsening symptoms, may indicate an infection requiring medical assessment.

If breathing becomes difficult or symptoms rapidly worsen, do not delay seeking care at our 24/7 emergency room for immediate evaluation.

Emergency Care For Severe Laryngitis Symptoms

Laryngitis is not always contagious, and the risk of spreading it depends on its underlying cause. Infectious laryngitis associated with a viral or bacterial illness may spread to others, while laryngitis caused by voice overuse, reflux, allergies, smoke, or other irritation cannot be transmitted. If symptoms include difficulty breathing, stridor, severe difficulty swallowing, drooling, or rapidly worsening symptoms, seek emergency medical care at Exceptional Emergency Centers. Prompt evaluation can help determine whether the symptoms are caused by uncomplicated laryngitis or another condition affecting the airway.

Key Takeaways

Laryngitis can be contagious when caused by a viral or bacterial infection, but noninfectious cases cannot spread to others.
Viral respiratory infections, including colds and flu, are common causes of contagious laryngitis.
Voice strain, acid reflux, allergies, smoke, and chemical irritation can cause laryngitis without an infection.
Hoarseness, temporary voice loss, sore throat, dry cough, and throat irritation are common symptoms.
Difficulty breathing, stridor, severe difficulty swallowing, drooling, or rapidly worsening symptoms require immediate emergency medical care.

FAQs

Is laryngitis contagious?

Laryngitis can be contagious when it is caused by a contagious viral or bacterial infection. However, laryngitis caused by voice strain, acid reflux, allergies, smoke, or other irritation is not contagious.

Can you catch laryngitis from someone?

You can catch the infection that causes laryngitis when the underlying cause is a contagious virus or bacteria. You cannot catch noninfectious laryngitis caused by voice overuse, reflux, allergies, smoke, or chemical irritation.

Is viral laryngitis contagious?

Yes. Viral laryngitis can occur as part of a contagious respiratory infection such as a cold or flu. The virus can spread to other people even though laryngitis refers to inflammation of the voice box.

Is laryngitis contagious without a fever?

Yes. A person can have contagious viral laryngitis without having a fever. Whether laryngitis is contagious depends on its underlying cause rather than the presence or absence of fever.

Can you get laryngitis from kissing?

If laryngitis is caused by a contagious respiratory infection, close contact such as kissing can increase exposure to the underlying infectious germs. However, noninfectious laryngitis cannot be spread through kissing.

How long does laryngitis last?

Acute laryngitis usually lasts a short time, and symptoms commonly resolve within two to three weeks or less. Persistent hoarseness should be evaluated by a healthcare professional, particularly when it continues for two to four weeks.

Can laryngitis spread to other people?

The inflammation itself does not necessarily spread, but the infectious cause can. If a virus or bacteria causes laryngitis, that underlying infection may be transmitted to other people. Laryngitis from voice strain, reflux, allergies, or irritation is not contagious.

When should I see a doctor for laryngitis?

See a healthcare professional if hoarseness lasts two to four weeks, symptoms become worse, or you develop persistent fever, increasing pain, difficulty swallowing, or other concerning symptoms. Seek immediate medical care for difficulty breathing or other severe airway symptoms.