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Pain When Swallowing: Causes & Treatment

Pain when swallowing (odynophagia) can have many causes, from sore throats to more serious conditions. Learn about symptoms, causes, and treatment.

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Pain when swallowing (odynophagia) can have many causes, from sore throats to more serious conditions. Learn about symptoms, causes, and treatment.

What is Pain When Swallowing?

Pain when swallowing is medically known as odynophagia. It describes discomfort, pain, or a burning sensation that occurs when swallowing food, liquids, or even saliva. This is a common symptom with a wide range of possible causes, from harmless viral infections to conditions requiring medical attention. It is important to distinguish odynophagia from dysphagia, which refers to difficulty swallowing or the sensation of food getting stuck, although both symptoms can occur together.

Causes

Pain when swallowing can result from a variety of diseases and conditions:

Common Causes

Sore throat and pharyngitis: Inflammation of the pharynx, usually caused by viruses or bacteria, is one of the most frequent causes of swallowing pain.
Tonsillitis: Inflamed tonsils often cause severe swallowing pain, frequently accompanied by fever and swollen lymph nodes.
Influenza and common cold: Viral respiratory infections irritate the mucous membranes of the throat, causing pain when swallowing.
Scarlet fever: A bacterial infection caused by streptococci, leading to throat pain and a characteristic skin rash.
Mouth ulcers (aphthous ulcers): Small, painful sores in the mouth or throat area can make swallowing uncomfortable and painful.

Other Possible Causes

Esophagitis: Inflammation of the esophagus, often caused by acid reflux, fungal infections (e.g., Candida), or viral infections.
Gastroesophageal reflux disease (GERD): Stomach acid flowing back into the esophagus can irritate its lining and cause swallowing pain.
Foreign body: A swallowed object or fish bone can cause pain and injury in the throat or esophagus.
Infectious mononucleosis (Epstein-Barr virus): This viral illness often causes severely swollen, coated tonsils and intense throat pain.
Fungal infections: Particularly in immunocompromised individuals, a Candida infection can affect the oral and pharyngeal mucosa.
Tumors: In rarer cases, tumors in the throat, esophagus, or laryngeal area can cause swallowing pain.
Neurological conditions: Certain neurological diseases can impair swallowing muscles and cause discomfort.

Symptoms and Associated Symptoms

Pain when swallowing rarely occurs in isolation. Common accompanying symptoms include:

Sore or scratchy throat
Fever and general feeling of illness
Swollen lymph nodes in the neck
Hoarseness or changes in voice
Cough or runny nose
Burning sensation behind the breastbone (in case of reflux)
Redness, coatings, or pustules in the mouth or throat
Ear pain (referred pain)

Diagnosis

The diagnosis of swallowing pain begins with a thorough medical history and physical examination. The doctor typically inspects the mouth, throat, and lymph nodes. Depending on the suspected cause, further investigations may include:

Swab and laboratory testing: A throat swab can detect bacteria or fungi. Blood tests can reveal viral infections or signs of inflammation.
Laryngoscopy / Endoscopy: A camera is used to directly examine the throat, larynx, or esophagus.
Imaging: In certain cases, ultrasound, X-ray, or computed tomography (CT) scans are used, for example when an abscess or tumor is suspected.
pH monitoring / Manometry: When reflux or esophageal disease is suspected, specialized measurements of acid levels and esophageal pressure may be performed.

Treatment

Treatment depends on the underlying cause:

General Measures

Drink plenty of fluids (warm teas, water)
Rest the voice and get adequate rest
Prefer soft, non-irritating foods
Gargle with salt water or specialized gargling solutions
Warm neck compresses to ease discomfort

Medical Treatment

Pain relief: Ibuprofen or paracetamol can reduce pain and fever.
Local treatments: Lozenges, throat sprays, or gargling solutions with pain-relieving or anti-inflammatory ingredients.
Antibiotics: Prescribed by a doctor for bacterial infections (e.g., streptococcal tonsillitis).
Antifungals: Specific antifungal medications are used for fungal infections.
Acid suppressants: Proton pump inhibitors or antacids are used for gastroesophageal reflux.

When to See a Doctor

Swallowing pain should be evaluated by a doctor if:

Symptoms persist for more than one week
High fever (above 39°C / 102°F) is present
Swallowing fluids becomes almost impossible
Severe shortness of breath or stridor (wheezing breath sounds) occurs
A foreign body sensation does not resolve
Unexplained weight loss or persistent hoarseness is present
Blood is visible in saliva or vomit

References

German Society of Otorhinolaryngology (AWMF) - Guideline on Pharyngitis and Tonsillitis (2021).
Koop H. et al. - Gastroesophageal Reflux Disease. Deutsches Aerzteblatt (2020).
World Health Organization (WHO) - Sore throat and upper respiratory tract infections. Geneva, 2022.

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