Acute laryngitis is a short-lived inflammation of the vocal cords, almost always caused by a viral infection. Symptoms typically last three to seven days and resolve on their own within one to two weeks without any specific treatment. It’s one of the most common causes of hoarseness and voice loss, and while it can be uncomfortable, it rarely leads to serious complications in adults.
What Happens Inside Your Throat
Your vocal cords are two small bands of muscle tissue that sit inside the larynx, or voice box, at the top of your windpipe. When you speak, air from your lungs passes through them, and they vibrate to produce sound. During acute laryngitis, the tissue lining these vocal cords becomes inflamed and swollen. That swelling changes how the cords vibrate, which is why your voice sounds hoarse, raspy, or disappears altogether.
The same swelling can irritate nerve endings in the area, triggering a dry, persistent cough and a scratchy or raw feeling in your throat. Because the larynx sits right at the entrance to your airway, significant swelling can occasionally make breathing feel slightly tight, though this is far more common in young children than in adults.
Common Causes
The vast majority of acute laryngitis cases stem from the same viruses responsible for colds and upper respiratory infections. The infection starts in the nose or throat and spreads downward to the larynx. You might notice the hoarseness kicking in a day or two after cold symptoms begin.
Other triggers that can inflame the vocal cords in the short term include:
- Voice overuse: shouting at a concert, lengthy public speaking, or cheering at a sporting event
- Irritant exposure: cigarette smoke, strong chemical fumes, or very dry air
- Allergic reactions: seasonal or environmental allergens that cause throat swelling
Bacterial infections are a much less common cause. And even when bacteria are involved, antibiotics offer little measurable benefit. A Cochrane review of clinical trials found that neither penicillin nor erythromycin improved objective voice quality compared to placebo when tested in adults with acute laryngitis. The reviewers concluded that any modest symptom improvements from antibiotics do not outweigh the cost, side effects, and contribution to antibiotic resistance.
What It Feels Like
The hallmark symptom is hoarseness. Your voice may sound breathy, strained, or lower in pitch than usual. In some cases, you lose your voice entirely. This is often accompanied by a dry cough, a tickling or rawness in the throat, and a frequent need to clear your throat. Swallowing might feel mildly uncomfortable but shouldn’t be severely painful.
Because acute laryngitis frequently arrives alongside a cold, you may also have a runny nose, mild fever, fatigue, and general achiness. The voice symptoms tend to peak around day two or three and then gradually improve. Most people notice significant improvement within a week, though a mild hoarseness can linger for up to two weeks as the vocal cord tissue finishes healing.
How It’s Diagnosed
Most of the time, a doctor can diagnose acute laryngitis based on your symptoms alone. If you’ve had hoarseness for a few days alongside cold symptoms, no testing is needed. A physical exam where the doctor listens to your voice and looks at your throat is usually sufficient.
If hoarseness persists beyond two weeks, further evaluation is recommended. At that point, a doctor may perform a laryngoscopy, a procedure where a thin, flexible tube with a tiny camera is passed through your nose or mouth to get a direct view of the vocal cords. This allows them to check for other causes of prolonged hoarseness, such as vocal cord nodules, polyps, or other conditions that wouldn’t resolve on their own.
Self-Care That Actually Helps
Since acute laryngitis is overwhelmingly viral, the goal is to reduce irritation and let your vocal cords heal. The single most effective thing you can do is rest your voice. That means speaking as little as possible, not just avoiding yelling. Whispering, counterintuitively, can strain the vocal cords even more than speaking at a normal volume, so it’s better to talk softly and briefly when you need to communicate.
Staying well hydrated helps keep the mucous membranes in your throat moist, which reduces irritation and supports healing. Warm liquids like tea or broth are particularly soothing. Breathing in steam from a bowl of hot water or running a humidifier in your room adds moisture to the air, which can ease the raw, scratchy feeling. Avoiding smoke, alcohol, and caffeine during recovery also helps, since all three can dry out or further irritate the throat lining.
Over-the-counter pain relievers can help with any soreness or fever. Throat lozenges provide temporary relief by stimulating saliva production, which keeps the throat moist.
When Medication Plays a Role
For the typical case, no prescription medication is needed. Antibiotics are not recommended as a first-line treatment. The Cochrane review examining multiple trials was clear: antibiotics do not objectively improve voice quality in acute laryngitis, and prescribing them routinely does more harm than good at a population level.
Oral corticosteroids (steroids that reduce inflammation) are occasionally used in specific situations. The American Academy of Family Physicians notes that appropriate cases include children with recurrent croup that involves laryngitis, allergic laryngitis, and adults whose livelihood depends on their voice, such as singers or performers facing a critical engagement. For the average person with a few days of hoarseness from a cold, steroids are not warranted.
Acute Laryngitis in Children
When the same viral infection hits the larynx of a child younger than five, the condition is called croup rather than laryngitis. The difference is largely anatomical: a young child’s airway is much narrower, so the same amount of swelling causes proportionally more obstruction. Croup produces a distinctive barking cough and can cause stridor, a high-pitched sound during breathing that signals the airway is partially narrowed.
Croup often starts like an ordinary cold, then progresses to fever and the characteristic bark. Symptoms tend to be worse at night. Most cases are mild and can be managed at home, but a child who is struggling to breathe, making stridor sounds while at rest, or showing signs of distress needs prompt medical attention. In older children and adults, the airways are large enough that this level of obstruction is uncommon.
Signs That Need Attention
Acute laryngitis in adults is almost always harmless, but a few patterns warrant a closer look. Hoarseness lasting longer than two weeks should be evaluated, because at that point it may no longer be simple acute laryngitis. Difficulty breathing or noisy breathing in any age group is a reason to seek care quickly. Severe throat pain out of proportion to what you’d expect from a cold, difficulty swallowing liquids, or coughing up blood are also signals that something beyond a typical viral infection may be going on.