Sore throat: causes, symptoms, diagnosis, treatment

Laryngeal pain is a symptom, not a definitive diagnosis. Most often, people describe it as a sore throat, burning, or tenderness in the Adam's apple, difficulty speaking, hoarseness, a dry cough, or pain when swallowing. The most common cause remains acute laryngitis, which often develops after a viral upper respiratory infection or vocal strain and, in most cases, resolves on its own. [1]

It's important to distinguish between laryngeal pain and a regular sore throat. When the oropharynx is affected, the most common symptoms are pain when swallowing, a scratchy feeling, and inflammation of the back of the throat. Laryngeal pain is much more often characterized by a change in voice, pain when speaking, a feeling of discomfort deeper in the neck, and sometimes noisy inhalation. This distinction helps determine when a typical symptomatic treatment is needed and when an examination by an otolaryngologist is necessary. [2]

This symptom may be associated with more than just infection. Laryngeal pain can also occur with vocal overload, muscle-tension dysphonia, laryngopharyngeal reflux, neck trauma, complications following intubation, inflammation of the laryngeal joints in rheumatoid arthritis, and, less commonly, benign and malignant tumors. Therefore, the same complaint may require completely different treatments in different people. [3]

The primary clinical goal is not simply to relieve pain, but to quickly distinguish the most likely and safe causes from rare but dangerous conditions that risk airway compromise or missed tumors. This is why the modern approach is built around red flags, timing of symptoms, and mandatory laryngeal imaging at the appropriate time. [4]

The main causes of throat pain

Acute laryngitis is usually the most common cause. It can occur after colds, flu, other viral infections, shouting, singing, prolonged speaking, coughing, and general vocal strain. It is characterized by sudden hoarseness, a sore throat, a dry cough, and discomfort when speaking. In most adults, the course is benign, but a significant worsening after a few days or a persistence of symptoms beyond normal warrants a reassessment of the diagnosis. [5]

A very common, yet underestimated, cause is functional laryngeal muscle strain, or muscle-tension dysphonia. In this situation, inflammation may be minimal or absent, and vocal pain and fatigue arise from improper vocal technique, chronic neck muscle tension, stress, working in a noisy environment, and constantly forcing the voice. This is especially common among teachers, singers, coaches, videographers, and anyone who speaks at a high volume. [6]

Another important cause is laryngopharyngeal reflux. In this condition, stomach or duodenal contents irritate the lining of the larynx. Rather than typical heartburn, the patient often complains of a lump in the throat, a constant need to clear their throat, a dry cough, morning hoarseness, and deep throat pain. Modern reviews emphasize that this diagnosis should not be made too easily based on complaints alone, as the symptoms are nonspecific and overlap with other conditions. [7]

In some patients, laryngeal pain is a consequence of mechanical injury. This can occur after intubation, neck trauma, burns from hot steam, or exposure to smoke or chemical irritants. After intubation, persistent hoarseness, pain, a feeling of difficulty breathing, and wheezing are particularly concerning. In this group, spontaneous improvement should not be expected for a long time without an in-person assessment. [8]

Finally, there is a small but most dangerous group of causes: epiglottitis, croup in children, deep neck infections, cricoarytenoid joint inflammation in rheumatoid arthritis, and laryngeal cancer. These conditions are much less common than common laryngitis, but they are the ones that determine why the timing of symptoms, breathing difficulties, and voice changes are so important in laryngeal pain. [9]

Table 1. Main causes of pain in the larynx

Cause	What does the diagnosis usually suggest?	How urgently do you need a doctor?
Acute laryngitis	Hoarseness after a viral infection or voice strain	Usually planned, if there is no shortness of breath
Muscle tension dysphonia	Pain and fatigue in the voice in the evening, strain on the voice, tension in the neck	Planned, but with subsequent visualization of the larynx
Laryngopharyngeal reflux	Morning hoarseness, coughing, lump in throat, chronic symptoms	Planned, in case of a protracted course
Post-intubation or traumatic injury	Recent intubation, neck injury, worsening breathing	Urgently for stridor and increasing pain
Epiglottitis	Severe pain, drooling, difficulty swallowing, respiratory distress	Urgently
Croup in a child	Barking cough, hoarseness, noisy breathing	From urgent to urgent, by severity
Laryngeal cancer	Long-term unexplained hoarseness, pain, neck knot	Urgent direction

The summary is based on clinical guidelines for dysphonia, epiglottitis, croup, and awareness of laryngeal cancer.[10]

When is a sore throat dangerous?

The most important red flag is difficulty breathing. Noisy inhalation, increasing shortness of breath, inability to speak calmly, cyanosis, marked restlessness, drooling, and forced sitting with a forward lean require immediate emergency care. These signs are primarily characteristic of epiglottitis and severe upper airway obstruction. [11]

In children, croup is especially significant. Its classic symptoms include a barking cough, hoarseness, and inspiratory stridor. Even if the child appears relatively stable, the appearance of stridor at rest, intercostal retractions, lethargy, or bluish lips means the situation should no longer be treated as a common cold. [12]

In adults, another scenario is no less important: long-term unexplained hoarseness. Current guidelines recommend laryngoscopy if dysphonia does not resolve or improve within 4 weeks, and sooner if a serious cause is suspected. For people 45 years and older with persistent unexplained hoarseness, NICE recommends urgent referral via the oncology route. [13]

Patients with risk factors for laryngeal cancer require special attention. Smoking and alcohol remain the most significant, with their combination increasing the risk more than either factor alone. Therefore, laryngeal pain in an older smoker with hoarseness, weight loss, or a lump in the neck should never be dismissed as laryngitis. [14]

In patients with rheumatoid arthritis, pain and hoarseness are sometimes a manifestation of damage to the laryngeal joints. If stridor, a sensation of airway narrowing, or fixed hoarseness occurs, this possibility should also be considered, as it can lead to severe obstruction. [15]

Table 2. Red flags for sore throat

Sign	What could be behind it?	Tactics
Noisy breathing, shortness of breath, salivation	Epiglottitis, acute edema, severe obstruction	Call an ambulance
Barking cough and stridor in a child	Cereals	Urgent assessment, emergency care if worsening
Hoarseness for more than 4 weeks	Persistent dysphonia of any cause, including tumor	Laryngoscopy
Unexplained hoarseness in a person 45 years of age or older	Possible laryngeal cancer	Urgent direction
Pain and hoarseness after intubation	Laryngeal trauma, swelling, impaired mobility of the folds	Urgent in-person assessment
Hoarseness and stridor in rheumatoid arthritis	Lesions of the laryngeal joints	Urgent inspection

Based on NHS guidelines, NICE, dysphonia guidance and reviews of post-intubation injuries and rheumatoid laryngeal disease.[16]

What symptoms help to understand the cause?

If pain when speaking, sudden hoarseness, and a connection with a cold or vocal strain are prominent, acute laryngitis is most likely. In this case, fever may be low or absent, and the general condition often remains relatively satisfactory. This distinguishes it from severe infections with rapidly worsening symptoms. [17]

If pain and vocal fatigue intensify in the evening, after long conversations, or in noisy environments, and there is no significant fever or signs of infection, consider muscle-tension dysphonia. This form is characterized by a sensation of the throat and neck literally becoming tired from speaking. In this case, voice rehabilitation, rather than antibacterial therapy, is more important. [18]

If the symptom is chronic, especially in the morning, and is accompanied by coughing, throat clearing, and a globus sensation, the likelihood of laryngopharyngeal reflux increases. However, it is precisely this group of symptoms that is most prone to diagnostic errors, as similar complaints can be caused by laryngeal muscle hyperfunction, allergic inflammation, chronic cough, and neurogenic hypersensitivity. Therefore, a diagnosis should not be made automatically based solely on subjective sensations. [19]

Severe pain with relatively mild symptoms in the oral cavity, salivation, a muffled voice, and difficulty swallowing are all reasons to suspect epiglottitis. Prolonged hoarseness, especially in a smoker, is a reason to consider not an acute infection but rather the need to rule out a tumor. In the clinical setting of laryngeal pain, it is the combination of pain, the duration of symptoms, and the quality of breathing that provides the doctor with the most information. [20]

Table 3. Symptoms that most often suggest the cause

Symptom or combination	A more likely reason
Sudden hoarseness after a cold	Acute laryngitis
Pain when talking after shouting or singing	Voice overload
Voice fatigue in the evening, neck tension	Muscle tension dysphonia
Morning hoarseness, lump in throat, coughing	Laryngopharyngeal reflux
Barking cough and stridor in a child	Cereals
Drooling and difficulty swallowing	Epiglottitis
Long-term hoarseness without explanation	Tumor before exclusion

The summary table is compiled from modern reviews and clinical guidelines on laryngitis, dysphonia, reflux, epiglottitis and laryngeal cancer. [21]

Diagnostics

The first stage is an in-person examination and medical history. The doctor determines the duration of symptoms and whether they are related to a viral infection, vocal strain, smoking, alcohol, heartburn, recent intubation, neck trauma, or rheumatological diseases. At this stage, it is already possible to determine whether this is an acute, likely benign, process or a symptom requiring rapid visualization of the larynx. [22]

The key method is laryngoscopy. Dysphonia guidelines recommend performing it if the voice change does not improve within 4 weeks, and sooner if a serious cause is suspected. This is one of the most practical and underappreciated approaches, as visualization allows for the rapid differentiation between inflammation, functional disorders, benign lesions, traumatic changes, and suspected tumors. [23]

Computed tomography (CT) and magnetic resonance imaging (MRI) should not be the first step in evaluating a primary complaint of voice or laryngeal pain without imaging. Guidelines emphasize that such testing is generally unnecessary before laryngoscopy and may only increase costs and delay proper routing. Exceptions arise when, after examination, there is suspicion of a tumor, deep infection, trauma, or a complicated process. [24]

When laryngopharyngeal reflux is suspected, the modern approach has become more cautious. For patients with isolated chronic laryngeal symptoms, indefinite empirical courses of proton pump inhibitors are increasingly recommended, instead of a more precise assessment, including outpatient reflux monitoring outside of acid-suppressive therapy if the diagnosis remains unclear. [25]

If muscle-tension dysphonia is suspected, after visualization of the larynx, the patient is referred for voice therapy. If a tumor is suspected, further imaging, biopsy, and oncologic evaluation are necessary. In childhood croup, the diagnosis is usually clinical, and in epiglottitis, airway safety remains the priority, rather than aggressive attempts at home examination or without airway readiness. [26]

Table 4. What is included in the diagnosis of laryngeal pain?

Method	When needed	What does it give?
Examination and anamnesis	To all patients	Primary sorting of reasons and urgency
Flexible laryngoscopy	In case of persistent dysphonia and suspicion of a serious cause	Visualization of the larynx
Videostroboscopy	For professional voice complaints and subtle disorders	Evaluation of vocal fold vibration
Computed tomography or magnetic resonance imaging	After examination, if a tumor, injury, or complication is suspected	Clarification of the prevalence of the process
Outpatient reflux monitoring	For chronic symptoms and unclear reflux	More accurate confirmation of reflux

The table is consistent with current dysphonia guidelines and reviews of laryngopharyngeal reflux.[27]

Treatment

Treatment depends not on the pain itself, but on the cause. For uncomplicated acute laryngitis, the mainstays remain voice rest, limiting vocal strain, adequate fluid intake, irritant control, rest, and symptomatic pain relief as needed. Antibiotics for typical acute laryngitis generally do not improve objective outcomes and should not be prescribed automatically. [28]

For muscle-tension dysphonia, the primary treatment method is voice therapy. It helps reduce muscle tension, alleviate pain, improve voice quality, and develop a more gentle speaking technique. Some patients benefit from manual therapy of the paralaryngeal muscles, the effectiveness of which has been confirmed by a systematic review and meta-analysis. [29]

If laryngopharyngeal reflux is suspected, the first step is lifestyle modification. In practice, this means reducing late-night meals, controlling weight, quitting smoking, limiting alcohol and certain food triggers, and reconsidering the habit of constantly clearing the throat. Proton pump inhibitors should not be prescribed to everyone, as current reviews show controversial and often weak benefits for this group of symptoms. [30]

For childhood croup, a glucocorticosteroid is used, most commonly dexamethasone, with a single dose of 0.15 milligrams per kilogram of body weight recommended even in mild, moderate, and severe cases. In moderate to severe cases, inhaled adrenaline and observation are added, as the effect of adrenaline is rapid but time-limited. [31]

Epiglottitis is no longer a home treatment option. The focus here is immediate airway assessment, hospitalization, and antibiotic therapy after stabilization. Treating this type of pain like a common cold is dangerous because swelling can progress rapidly. [32]

If a tumor is the cause, treatment depends on the stage and includes specialized oncological treatment. Self-treatment of hoarseness with antibiotics, antiseptics, and endless courses of antireflux medications in this situation is a waste of time. Therefore, persistent hoarseness in a person with risk factors should be considered a reason for urgent examination rather than prolonged attempts at symptomatic treatment at home. [33]

Table 5. Treatment by probable cause

Probable cause	The basic approach
Acute laryngitis	Voice rest, fluids, symptomatic treatment
Muscle tension dysphonia	Voice therapy, voice load correction
Laryngopharyngeal reflux	Lifestyle modification, selective therapy after evaluation
Cereals	Dexamethasone, in severe cases inhalational adrenaline
Epiglottitis	Emergency care, respiratory protection, hospital
Post-intubation trauma	Urgent examination by an otolaryngologist
Laryngeal tumor	Urgent diagnosis and specialized treatment

The table is based on guidelines on dysphonia, croup, epiglottitis, and reviews on reflux and acute laryngitis.[34]

Prevention

Prevention depends on the underlying mechanism, but there are universal measures. The most important are smoking cessation, alcohol limitation, reasonable vocal exercise, and early treatment for persistent hoarseness. Eliminating tobacco use and the combination of tobacco and alcohol is especially important for cancer prevention. [35]

For people in voice professions, prevention revolves around speech technique. Regular pauses, avoiding shouting, reducing background noise in the workplace, and early correction of vocal strain, rather than working through pain and hoarseness, are helpful. If your voice changes regularly, it's advisable to immediately seek a laryngoscopy and consultation with a voice specialist. [36]

If you're prone to reflux symptoms, weight management, avoiding late, heavy dinners, and reconsidering dietary and behavioral triggers are key. This doesn't guarantee the disappearance of all symptoms, but it does reduce the strain on the mucous membrane and lower the risk of long-term chronic laryngeal irritation. [37]

After intubation and airway surgery, preventing complications depends on the medical team, but it is important for the patient not to ignore persistent pain, hoarseness, and stridor after discharge. The earlier a post-traumatic problem is identified, the higher the chance of restoring voice and breathing without late complications. [38]

Forecast

With common acute laryngitis, the prognosis is good. In most patients, symptoms subside within a few days and resolve within 1-2 weeks. If the voice does not recover or continues to deteriorate, this is a reason to stop waiting and proceed to instrumental diagnostics. [39]

With muscle-tension dysphonia, the prognosis is also usually favorable, especially if the person genuinely changes their vocal habits and undergoes voice therapy. Without correcting their speech patterns, complaints tend to recur. [40]

In cases of epiglottitis, severe croup, post-intubation trauma, and tumors, the prognosis depends primarily on the speed of recognition of the problem. Early treatment is important not only for pain relief, but also for preserving the airway, voice quality, and, in the case of a tumor, the chances of more successful treatment. [41]

FAQ

1. Can a sore throat be caused simply by shouting or talking for a long time?
Yes. Voice strain and muscle-tension dysphonia are common causes of pain and hoarseness, especially in people with voice-related professions. [42]

2. Are antibiotics necessary for a sore throat?
Usually not, if we're talking about typical acute viral laryngitis. Routine antibiotic use in this case does not provide significant objective benefit. [43]

3. How long should I wait before seeing a doctor if my voice becomes hoarse?
If there is shortness of breath or stridor, see a doctor immediately. If there are no warning signs, but the dysphonia does not improve within 4 weeks, a laryngoscopy is necessary. [44]

4. When should you urgently consider laryngeal cancer?
When hoarseness persists and remains unexplained, especially in a person 45 years of age or older, who smokes or drinks alcohol, and also in the presence of a cervical node. [45]

5. Can reflux be diagnosed based solely on complaints of a lump in the throat and hoarseness?
No, this is often insufficient. Isolated chronic laryngeal symptoms are nonspecific, and in doubtful cases, a more precise diagnosis is required. [46]

6. Why shouldn't a CT scan be done immediately?
Because when a primary complaint is voice or laryngeal pain, imaging of the larynx itself is usually needed first. Before that, CT and MRI scans are often of no use. [47]

7. What is the danger of epiglottitis?
It can quickly lead to critical narrowing of the airway. Therefore, severe pain, drooling, and difficulty breathing require immediate medical attention. [48]

8. A child has a barking cough and hoarseness. Is this always croup?
Often yes, but the severity varies. The appearance of stridor at rest, lethargy, chest indrawing, or cyanosis requires urgent evaluation. [49]

9. Does voice therapy help?
Yes, especially with muscle-tension dysphonia and a number of functional voice disorders. For such patients, it is one of the key treatment methods. [50]

10. Can rheumatoid arthritis cause laryngeal pain?
Yes, if the laryngeal joints are affected, this is possible. In severe cases, stridor may even occur. [51]