While both conditions share some similar symptoms, such as a sore throat and hoarseness, they have distinct differences. Difficulty and pain when swallowing (a main symptom in older children and adults). Until mid-2021, COVID-19 infection was characterized by lower respiratory tract infections, such as fever and cough, with olfactory or taste disturbances. 1. Symptoms that accompany pharyngitis vary depending on the underlying condition. Laryngitis sounds like a severe illness, but many individuals may have already had a few times without even knowing. Predstavlja zapaljenje sluznice grkljana pri čemu dolazi do otoka glasnih žica i sužavanja lumena grkljana. Laryngitis causes a raspy or hoarse voice due to inflammation of the vocal cords. Laryngitis is an inflammation or infection of the voice box (larynx) and the vocal cords it contains. This condition can cause hoarseness, coughing, and difficulty speaking. Drink plenty of fluids. The flu, cold and allergies do not cause shortness of breath unless it progresses to pneumonia. Bacterial infections can also cause laryngitis. 10 It is often found in conjunction with a sore throat, or pharyngitis. Here’s how to treat laryngitis at home and when to see a doctor. Subscribe to Codify by AAPC and get the code details in a flash. Laryngitis, an inflammation of the mucosa or cartilages of the larynx, may result from upper respiratory tract infection or by direct irritation from inhalation of dust, smoke, or irritating gas; foreign bodies; or the trauma of intubation, excess vocalization, or injury from roping or restraint devices (in livestock). 2023/2024 ICD-10-CM Index › 'L' Terms › Index Terms Starting With 'L' (Laryngitis) Index Terms Starting With 'L' (Laryngitis)Practice Essentials. loss of appetite. With laryngitis, your vocal cords swell and become irritated. La laringe contiene las cuerdas vocales. reacciones alérgicas. headache. It can affect people of every age and gender, but is more common in men of middle age. Abnormal or high-pitched breathing noises (a main symptom in children). In fact, the main problem that laryngitis can cause is that the pathogens that have infected the larynx spread to the lower airways (bronchi and lungs). The result is acute change in the voice, with decreased volume and hoarseness. This backflow is called laryngopharyngeal reflux (acid that reaches the level of the throat). Chronic laryngitis. 1% solution of "Chlorfillipt" is recommended to dilute with saline solution in the ratio 1:10. Salt water can help kill harmful bacteria and may reduce pain. 1. However, a person can also drink warm. Until mid-2021, COVID-19 infection was characterized by lower respiratory tract infections, such as fever and cough, with olfactory or taste disturbances. Laryngitis is inflammation of the larynx, usually the result of a virus or overuse. But some people have. Overuse of your voice (talking or singing a lot) An allergic reaction. In the case of hoarseness that comes with a sore throat, cough and a fever, and lasts just a few days, laryngitis is probably an adequate diagnosis, as most such cases are. Singers, cheerleaders, sports fans, and children may be hoarse after shouting and screaming. Debilidad o pérdida de la voz. Laryngitis is inflammation of the larynx (voice box). Laryngitis Croup is a common respiratory tract infection of infants and children younger than 6 years of age, with a peak incidence between 7 and 36 months. Laryngitis (1) is the inflammation of the larynx due to an infection or irritation. Laryngitis atau laringitis adalah peradangan yang terjadi pada laring, yaitu bagian dari saluran pernapasan tempat pita suara berada. Most of the causes of laryngitis, such as common viruses infections or using your voice too much, are not serious. However, rhinitis, pharyngitis, and laryngitis were uncommon. In selected cases, the diagnosis of bacterial laryngitis was confirmed by operative biopsy. Sucking on lozenges. This can lead to edema of the true vocal folds, resulting in hoarseness. Wheezing or panting may also be present. H. Consider warming some water (not too hot) to loosen nasal and throat congestion, adding a little honey and lemon. Laryngitis occurs when your voice box or vocal cords become inflamed from overuse, irritation, or infection. Drinking at least eight glasses of water daily. Patient education: Laryngitis (The Basics) Patient education: Tonsillectomy and adenoidectomy in children (The Basics) Beyond the Basics — Beyond the Basics patient education pieces are longer, more sophisticated, and more detailed. LPR has been implicated in the etiology of many laryngeal diseases such as reflux laryngitis, subglottic stenosis, laryngeal carcinoma, granulomas, contact ulcers, and vocal nodules. In 1985, Schalen observed that, at the time of the acute laryngitic episode, many patients were carriers of bacterial infectious agents, the most common of which were Branhamella catarrhalis and Haemophilus influenzae. Laryngitis can be acute or chronic, infectious or noninfectious. 咽喉痛. Staying properly hydrated. WebMD explains causes and treatment. Laryngitis can be acute or chronic. Information regarding clinical presentation and course was collected. Laryngotracheitis (croup) Laryngotracheitis (or laryngotracheobronchitis, LTB) is an acute respiratory illness that involves infection of the larynx and the tracheobronchial tree. Laryngitis is when your voice box or vocal cords in the throat become irritated or swollen. The upper respiratory tract includes the sinuses, nasal passages, pharynx, and larynx, which serve as gateways to the trachea, bronchi, and pulmonary alveolar spaces. In November 2021, the emergence of B. If you spent the night singing along at a concert and woke up with no voice, you laryngitis likely isn't contagious. Throat clearing, coughing, and whispering all strain your voice box, so limit these. The approach to hoarseness in children is discussed separately. You may experience severe symptoms if the condition is worse. Croup is a common respiratory tract infection of infants and children younger than 6 years of age, with a peak incidence between 7 and 36 months. How long does laryngitis last? It depends on the type and the cause. You’re more likely to experience fever, cough, headache, and fatigue related to COVID-19 than laryngitis. Laryngitis is called acute if it lasts for three days or less or chronic when it lasts over three weeks. Laryngeal cancer symptoms include voice changes, such as hoarseness, and a sore throat or cough that won’t go away. You can prepare the sterile solution using a half teaspoon of salt in warm water. Laryngitis is the inflammation of the larynx (voice box). Accompanying signs of infectious laryngitis include odynophagia, cough, fever, and respiratory distress. If the throat is affected, it is called pharyngitis. Laryngitis is defined as inflammation of the larynx, typically resulting in huskiness or loss of the voice, harsh breathing, dysphonia, and/or a painful cough. The 2024 edition of ICD-10-CM J37. Laryngotracheitis (croup) : Laryngotracheitis (or laryngotracheobronchitis, LTB) is an acute respiratory illness that involves infection of the larynx and the tracheobronchial tree. Laryngitis occurs most commonly due to a virus associated with an upper respiratory tract infection. Some common causes are viral or bacterial infections like kennel cough, pneumonia, and canine influenza. Resting and breathing in steam can soothe the tissue, normally bring the voice back to normal in a few days. Practice Essentials. If it's due to a cold or upper respiratory infection, your doctor might recommend rest, fluids, and. Bottom Line. Acute laryngitis often resolves spontaneously, as many people would know from having a cold or mild allergies. The larynx is a deeper area of the respiratory system, so the complications that can derive from this disorder are usually more serious than those of pharyngitis. frequent urge to urinate. Nonbacterial agents such as chlorine gas, steam, or. Gargle with an antiseptic solution. The most common signs and symptoms of laryngitis are hoarseness, loss of voice, and throat pain. ” COVID-19, though, takes that one step further. Laryngitis can also be caused by overuse of the voice, such as from yelling or. Sensación de cosquilleo y aspereza en la garganta. Vocal nodules. The most common cause is a viral infection of the upper respiratory tract; bacterial laryngitis is rare. Most. Laryngitis refers to the inflammation of the larynx. Chapters0:00 Introduction0:29 Causes of Laryngitis 1:37 Symptoms of Laryngitis 1:55 Diagnosis of Laryngitis 2:47 Treatment and Medication of Laryngitis Lary. Once the water reaches a rolling boil, remove from heat and add 2-3 drops of your desired essential oils. Laryngitis Croup is a common childhood disease and one of the most frequent causes of acute respiratory distress in young children. If. Chronic laryngitis. it does not occur as a complication. Laryngitis is usually identified by its primary symptom, hoarseness. influenza, if present, such as:; influenza due to identified novel influenza A virus with other respiratory manifestations (J09. Tea with lemon juice and honey. Laryngeal Papillomatosis. The main symptoms of laryngitis are a hoarse voice, also known as dysphonia, and sore throat, due to inflammation in the laryngeal area. Unlike pharyngitis, an affected individual loses the ability to speak until they get better. Laryngitis is called acute if it lasts for three days or less or chronic when it lasts over three weeks. Common symptoms include a "barky" cough, a. The antibacterial property of saltwater kills the harmful bacteria, soothe an. Trauma to the throat, irritants such as smoke or dust, and underlying health problems like hypothyroidism, heart disease, or. The commonest germ causing laryngitis is a virus (viral laryngitis) although bacteria and fungi can also be. The therapy is an option for laryngeal inflammation that is detected on laryngoscopy (e. Laryngitis is one of the most common causes of hoarseness. To experience the most benefit and recover from your laryngitis quickly, gargle several times a day for several minutes at a time. This is the American ICD-10-CM version of J04. Sore throat, fever, hoarseness, trouble swallowing,. Try adding half a teaspoon of salt to an 8. Laryngitis can occur with any of those viruses. Pharyngitis is the inflammation of the mucosa of the pharynx/throat, which is part of the digestive system. Since laryngitis is associated with other conditions, like a cold or flu, other symptoms may be. However, if laryngitis continues to occur, a more serious underlying. The main symptoms of laryngitis include:Laryngitis is the condition of an inflamed larynx, often caused by an infection. Laryngitis may be acute or chronic and the most common form associated with a viral upper respiratory tract infection is self-limiting although. Water is best. 较为少见的情况下，喉炎症状也有可能由更严重或持续时间更长的病因引起。. Laryngitis can be acute or chronic. Antibiotics don't cure a viral infection, and should not be used. It is most commonly a temporary issue that lasts 3–7 days and goes away. Drink lots of fluids. Laryngitis is contagious if it is caused by an infection. 声音虚弱或失音. Pita suara yang membengkak juga mungkin menyebabkan gangguan pernapasan karena menghalangi. Laryngitis is the inflammation of the larynx (voice box). Drink two or three times a day. The approach to the adult who presents with hoarseness will be reviewed here. Chronic laryngitis. The larynx is the voice box that allows us to speak, shout, whisper, and sing. Qué es. There are a lot of causes of laryngitis, such as;Rosemary and peppermint essential oils added to a pot of boiling water can also help relieve laryngitis. Acute is the most common type of laryngitis. Gargling salt water might help alleviate symptoms of laryngitis. See laryngitis stock video clips. They will pay you back. The larynx contains the vocal cords. It may also be caused by:Laryngitis can only spread from one person to another if some form of infection causes it. Pharyngitis: Inflammation of the pharynx (throat) or sore throat caused. Laryngitis. The voice box (larynx) is located at the top of the airway to the lungs (trachea). The major symptom of croup is a cough with the sound of a barking seal. Avoiding irritants, such as smoking, excessive caffeine or foods that induce reflux. Understanding Reflux Laryngitis | Symptoms | Diagnosis | Treatment | Frontiers Key Glossary Terms Reflux Laryngitis Voice disorder caused by backflow of stomach fluids to the throat and voice box area; a type of supra-esophageal GERD Laryngopharyngeal Reflux (LPR) Backflow of stomach fluids to the laryngopharynx (voice box + lower back of. Get rid of laryngitis with the help of steroids, antibiotics, a humidifier and home care, depending on the underlying cause. Unlike pharyngitis, laryngitis affects the voice box, not the back of the throat. Knowing whether your sore throat is viral or bacterial is usually determined by symptoms. Symptoms that accompany pharyngitis vary depending on the underlying condition. The main symptom is a cough, which may bring up yellow-grey mucus (phlegm). If you're. Learn how to treat laryngitis and when to see a doctor. This type of laryngitis is generally caused by exposure to irritants over time. Selain suara serak, laringitis biasanya juga ditandai dengan nyeri di tenggorokan dan tenggorokan sakit saat menelan. Dr. nausea. Dysphonia is the medical term for a vocal disorder, and laryngitis is just one cause for dysphonia. It happens when allergies, upper respiratory infections or sinus infections make your vocal cords swell. Garlic and licorice tea: Brew a teaspoon of dry licorice powder in a cup of hot water for ten minutes. Esto puede causar ronquera. In addition to a sore, dry, or scratchy throat, a cold or flu may cause: sneezing. Causes include other illnesses and certain lifestyle factors. Tos seca. Laryngitis is an inflammation of the voice box, or larynx and the vocal cords. Laryngitis. The condition causes small, noncancerous tumors to form inside of your larynx, or voice box. Bacterial and viral sore throats. Laryngitis is an inflammation of the larynx. I would rinse your mouth well after spraying the Flonase and see if that avoids the problem. Laryngitis usually comes on suddenly and gets worse during the first 3 days. Symptoms of laryngitis include swollen vocal cords, a sore throat, and difficulty speaking or producing a voice. For people who smoke, their immune cells’ mission impossible is to eliminate tobacco smoke chemicals. Symptoms may vary from degree of laryngitis and age of the person (laryngitis in infants and children is more commonly caused by croup). Laryngitis can be present for a short time or may last for a long while. ; A few causes, however, require medical attention and can be. It usually goes away by itself within 1 to 2 weeks. Most cases are acute and go away in 3 weeks, but sometimes it lasts longer and becomes chronic. — Korin Miller, Health, 31 Oct. Laryngitis can be contagious, depending on the. It's not a disease, but a catch-all word that means you've lost your voice. Sometimes, the airway can get. In South Korea in 2015, there were 469,268 HZI cases, and the prevalence was 9. Common causes. An upper respiratory infection affects the upper part of your respiratory system, including your sinuses and throat. Compare More Words. Laryngitis symptoms include a raspy voice, losing your voice completely, coughing, trouble swallowing, a dry or sore throat, a tickling, scratchiness in the throat, a constant urge to clear the throat, postnasal discharge and fever. Advertisement. But more evidence is needed to confirm if apple cider vinegar is effective as a remedy for sore throats and. An upper respiratory infection affects the upper part of your respiratory system, including your sinuses and throat. He was then diagnosed. Reflux laryngitis is a product of backflow of stomach fluids to the voice box, also known as laryngopharyngeal reflux (LPR), which occurs when there is: Too much acid produced in the stomach, or. Treatment of disorders of the larynx including cancer must take these functions into account. Translators are available. Laryngitis usually starts with a dry cough, but as the fluid builds up and the swelling of the larynx increases, it can affect the heart rate, breathing. Pharyngitis is the inflammation of the mucous membranes of the oropharynx. Pharyngitis is a type of upper respiratory tract infection. You may be advised to use certain drugs, remove triggers, or have surgery to treat the problem. Typical symptoms include hoarseness and loss of voice. Chronic laryngitis can cause vocal cord strain and injuries or growths on the vocal cords (polyps or nodules). También es el órgano fonador o. You might not have typical acid reflux symptoms, like heartburn or indigestion. (See "Hoarseness in children: Evaluation" . 1, 2 It is characterized by varying degrees of inspiratory stridor (noisy breathing on inspiration), barking cough, and hoarseness as a result of laryngeal and/or tracheal obstruction. Acute laryngitis. Other symptoms of laryngitis include: Hoarseness; Changes in your voice; Total loss of voice; Laryngitis most often resolves within a week without the need for. Ova vrsta upale može se prepoznati po gubitku glasa, poteškoćama u glasnicama i promuklosti. Laryngitis is an inflammation of the larynx (voice box), located at the top of the windpipe. J37. These happen when germs infect the lower airways. Introduction. The 2024 edition of ICD-10-CM J04. The commonest germ causing laryngitis is a virus (viral laryngitis) although bacteria and fungi can also be causes of laryngitis. It is a viral infection that causes inflammation of the voice box (larynx) and vocal cords. If symptoms last longer than three weeks, it is. Laryngitis may accompany infectious rhinotracheitis and calicivirus infection. Vocal cord dysfunction is the abnormal closing of the vocal cords when you breathe in or out. 咽喉疼痛. Yet, some symptoms fall into a gray zone—like hoarseness and losing your voice. Symptoms include hoarseness, a sore throat, and. I got an email from a friend that said they had laryngitis so they could not talk over the phone. Aloe vera juice is effective to treat acid reflux. Translated literally to mean ‘like an elephant’, pachyderma denotes rough, thickened inter-arytenoid mucosa. Laryngitis in children can occur in many ways, but the most common are the following: Coughing. Strep throat — Approximately 10 percent of adults with a sore throat have strep throat. Use non-mentholated cough drops to soothe your voice. g. These injuries can be caused by: 1. Cuando estas resultan inflamadas o infectadas, se hinchan. Humming. This type of laryngitis is generally caused by exposure to irritants over time. Laryngitis refers to an inflamed larynx, or voice box. With sufficient rest and adequate treatment, acute laryngitis can be resolved pretty quickly. Possible: Some patients report hoarseness when using flonase. Cinnamon can be useful in killing bacteria and reducing the inflammation of laryngitis. Laryngitis that lasts longer than 3 weeks may be caused by irritation from:Symptoms. The larynx contains the vocal cords. As a result, it is what doctors call a non-specific term, or a somewhat generic diagnosis. Most cases happen during the winter or colder months. Diagnosis is based on clinical findings. Background: Acute laryngitis is a common illness worldwide. It can cause hoarseness, sore throat, dry throat and cough. The most common form of laryngitis is an infection caused by a virus. Drink once a day to soothe a sore throat. Avoid alcohol. a painful swelling of the…. Laryngitis is an inflammation and swelling of the voice box (larynx). Drug particles, as dry powder, settle along the airway mucosae, and this may cause local irritation, characterizing a form of chemical laryngitis, peaking as inflammation of the airway mucosae. In most cases, an upper respiratory tract infection causes it. Short-term vocal abuse (e. Breathing in things that irritate your throat, such as cigarette smoke. The larynx contains the vocal cords. It may result from upper respiratory tract infection or by direct irritation from inhalation of dust, smoke or irritating gas, or foreign objects. HZI is caused by reactivation of latent varicella-zoster virus []. It is located above the airway to your lungs. Most home remedies don’t work for your voice. Allergy and Immunology 43 years experience. Laryngitis is inflammation of the larynx (voice box), and is a common cause of hoarseness or a hoarse voice. According to the Cleveland Clinic, drinking warm liquids like tea can soothe a sore throat — and honey coats your throat, helping to reduce cough, and even has some antibacterial properties. A review of medical literature documented. "It's second nature to listen to other people when they're. Laryngitis occurs when your larynx, or voice box, becomes irritated and inflamed. A change in the sound of your voice (dysphonia) or the inability to speak (aphonia) Sore, dry, or tickly throat. Prolonged mouth breathing of cold air flows. A secondary objective was to report the rates of adverse events. As such, when laryngitis persists, be aware that this may indicate a more significant medical problem. Causes of acute laryngitis include: viral infection, such as a cold or flu; vocal strain, caused by overuse or yelling; bacterial infection, although this is less common. Perhaps the corticosteroid drips down into the throat area as the cause. Different areas: Laryngitis is swelling , infection of the larynx "voice box " when swollen by infection, trauma, a virus you het laryngitis and loose your voice The pharynx is a large area in the back of you throat and downward, pharyngitis is more of a sore throat appearance as opposed to loosing the voice. ICD-10 code J04 for Acute laryngitis and tracheitis is a medical classification as listed by WHO under the range - Diseases of the respiratory system . hoarseness. These medicines are natural and safe from adverse side effects. The other most common cause of voice loss is acute laryngitis. Voice change caused by laryngitis, or. It accompanies most upper airway viral and bacterial respiratory infections. If you have laryngitis, you may lose your voice or be hoarse. redness of the face, neck,. Laryngitis is a condition that affects the voice box, or larynx. Drink plenty of fluids. It is caused by an illness or vocal strain and is a temporary condition. Causes and Symptoms of Laryngitis. Irritation or redness of the eyes. A single dose of dexamethasone,. And it’s the perfect time to remember to drink those eight 8-ounce glasses daily that health experts recommend. According to Dr. 8 9 Patients with LPR may endure prolonged and exhaustive suffering if the physician is unable to establish a diagnosis because the signs and symptoms of the. [1] Acute Laryngitis is often a mild and self-limiting condition that typically lasts for a period of 3 to 7 days. However, if you do have symptoms, the most common ones may be: difficulty breathing. The 2024 edition of ICD-10-CM J37. The voice box (larynx) is located at the top of the airway to the lungs (trachea). The factors in the emergence and development of laryngitis. Acute laryngitis is commonly caused by viral upper respiratory tract infection or vocal strain and is typically self-limited, with complete resolution within three weeks. The main symptom is an altered voice (e. Laryngitis can be acute (short-term), lasting less than three weeks. La laringitis aguda suele tratarse con: Hidratación, sobre todo en roncadores. Other symptoms can include loss of voice, tickling. Laryngitis. A virus is usually what causes the inflammation. runny nose. J37. The causes of acute (short-term) and chronic (longer lasting) laryngitis differ. Most cases of laryngitis get better over the course of a week or two as the underlying cause resolves or is removed or minimised. Arum Triphyllum: when there is a pain in larynx while clearing the throat. Check if you have laryngitis Laryngitis. Laryngitis occurs when your vocal cords get damaged, particularly inflamed and swollen from infection or overuse. Policy. Laryngitis is when your voice box or vocal cords in the throat become irritated or swollen. Most often, laryngitis is associated with a viral respiratory infection, such as a cold, or extended periods of talking or singing. cough. Bibasilar atelectasis may not have any symptoms that you’ll notice. Laryngitis is inflammation of your voice box (larynx) that causes hoarseness, cough, and swollen glands. Pharyngitis — commonly known as sore throat — is an inflammation of the pharynx, resulting in a sore throat. This type occurs from a bacterial infection of the larynx, and the symptoms that follow are usually fever, pain, nasal discharge, and difficulty swallowing. loss of voice. Common symptoms include a "barky" cough, a. Breathing moist air is also helpful in reducing laryngitis. Laryngitis is the inflammation of the larynx, which is also known as the voice box. Pharyngitis is inflammation of the walls of the throat (pharynx). Se deben beber abundantes líquidos y mascar chicle. Let cool for 30 more minutes, strain, and drink 1/2 to 1 cup three to five times a day. Like asthma, vocal cord dysfunction can be triggered by breathing in lung irritants, having an upper respiratory infection or exercising. Are a heavy drinker. Laryngospasms are rare and typically last for fewer than 60 seconds. Boil for 10 minutes, and add a few tablespoons of honey. Laryngitis is when the vocal cords are swollen and inflamed, a common cause of hoarseness. Check if you have laryngitis. In the first trial, penicillin V (800 mg) or placebo was given twice daily for five days to 100 adults with laryngitis. Laryngitis is an inflammation or infection of the voice box (larynx) and the vocal cords it contains. The 2024 edition of ICD-10-CM J04. This fairly common condition often causes hoarseness or loss of. This article reviews the causes, diagnosis and management of pharyngitis, with a focus on the role of antibiotics and the indications for tonsillectomy. No, laryngitis typically does not cause permanent voice loss. Laryngitis causes symptoms such as a hoarse voice, sore throat, and persistent cough. Who can get laryngitis? Laryngitis can affect people of all ages. Drink Soups. On the other hand, laryngitis is the inflammation of the larynx/voice box, which is part of the airway system. laryngitis. Laryngitis is an inflammation of the larynx. anda ambrosini/unsplash. Having a voice that is hoarse (scratchy) or weak is the first sign that you have laryngitis. Laryngitis is categorised as acute if it lasts less than three weeks and chronic if symptoms last more than three weeks. In acute laryngitis there is a swelling of vocal cords that impairs the normal vibration. When the voice box is working normally, the vocal cords have a smooth motion when opening and closing. Muscle paralysis or fatigability can produce hypophonia, which is produced after excessive speaking. Treatment for upper respiratory infections often includes rest, fluids and over-the-counter pain relievers. It is caused by long-term exposure to an irritant, illness or an injury. A dry throat can make symptoms of laryngitis worse, so take steps to keep your throat moist. These include: Rest your voice. Causes of throat pain include flu, common cold, bacterial infections, allergies, smoke, GERD or tumor. It's important to seek medical attention if you experience new symptoms. Water is best for avoiding dehydration. Chronic laryngitis can cause vocal cord strain and injuries or growths on the vocal cords (polyps or nodules). Drape a clean pillow case or. Pada anak-anak,. A sore. This structure is responsible for protecting the airways, but also contains the vocal cords that produce the voice. 0 became effective on October 1, 2023. Most of the time, URTIs will go away on their own. , hoarseness). And if you suffer from gastroesophageal reflux disease. Chronic pharyngitis is a sore throat that lasts longer than most common coughs. The cough and other signs and symptoms of croup are the result of swelling and irritation around the voice box (larynx), windpipe (trachea) and bronchial tubes (bronchi). The meaning of LARYNGITIS is inflammation of the larynx.