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Chronic Pharyngitis – Causes and Treatment

Chronic pharyngitis is a long-lasting inflammation of the mucous membrane lining the throat. It causes persistent sore throat, dry cough, and difficulty swallowing.

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Things worth knowing about "Chronic Pharyngitis"

Chronic pharyngitis is a long-lasting inflammation of the mucous membrane lining the throat. It causes persistent sore throat, dry cough, and difficulty swallowing.

What Is Chronic Pharyngitis?

Chronic pharyngitis is a persistent or recurrently occurring inflammation of the mucous membrane of the pharynx (throat). Unlike acute pharyngitis, which typically resolves within a few days, the chronic form lasts for weeks or months or keeps returning. It is a common condition that can affect people of all ages, particularly adults who are regularly exposed to irritants or suffer from underlying health conditions.

Causes

Chronic pharyngitis can be triggered or aggravated by a variety of factors:

Persistent irritant exposure: Cigarette smoke, alcohol, dust, chemical fumes, and dry indoor air are among the most frequent causes.
Chronic infections: Repeated bacterial or viral infections can cause lasting damage to the throat lining.
Gastroesophageal reflux disease (GERD): Stomach acid rising into the throat is a frequently overlooked cause of chronic irritation.
Allergies: Chronic allergic reactions lead to ongoing mucosal irritation.
Mouth breathing: Obstruction of nasal airflow due to a deviated nasal septum or nasal polyps forces mouth breathing, which dries out the throat.
Occupational stress: People who use their voice extensively (teachers, singers) or work in dusty environments are particularly at risk.
Immune deficiency: A weakened immune system can increase susceptibility to recurring infections and inflammation.

Symptoms

The symptoms of chronic pharyngitis are generally less intense than those of acute infection but are more prolonged. Common symptoms include:

Persistent sore throat or throat irritation
Dry, irritating cough due to mucus accumulation
Sensation of a foreign body in the throat (globus sensation)
Difficulty swallowing (dysphagia)
Hoarseness or voice changes
Thick or sticky mucus in the throat
Frequent throat clearing
Bad breath (halitosis)

Types of Chronic Pharyngitis

Clinicians distinguish between several subtypes:

Pharyngitis chronica simplex: Mild, diffuse redness and swelling of the throat mucosa without significant tissue changes.
Pharyngitis chronica hyperplastica (granulosa): The mucosa is thickened and shows granular enlargements of lymphatic tissue on the posterior pharyngeal wall.
Pharyngitis chronica atrophica (sicca): The mucosa becomes thin, dry, and shiny. This form is most common in older patients and causes a pronounced sensation of dryness.

Diagnosis

Diagnosis is typically made by an ear, nose, and throat (ENT) specialist. The evaluation includes:

Throat examination: Visual inspection of the mucosa for redness, swelling, coatings, or tissue changes.
Medical history: Assessment of risk factors such as smoking, occupation, reflux, or allergies.
Throat swab: Taken when a bacterial infection is suspected.
Endoscopy: Laryngoscopy or nasopharyngoscopy may be performed as needed.
Allergy testing or reflux evaluation: Further investigations are initiated when these causes are suspected.

Treatment

Treatment of chronic pharyngitis is primarily directed at addressing the underlying cause. Identifying and eliminating triggers is therefore essential:

General Measures

Smoking cessation and avoidance of alcohol
Adequate fluid intake to keep mucous membranes moist
Use of a humidifier indoors
Regular gargling with saline or antiseptic solutions
Avoidance of known irritants such as dust and chemical vapors

Medication

Mucosal moisturizers: Throat sprays or lozenges to soothe and hydrate the pharynx.
Antacids or proton pump inhibitors: Used when reflux is the underlying cause.
Antihistamines: Helpful in allergy-related pharyngitis.
Antibiotics: Only prescribed when a confirmed bacterial infection is present.

Treatment of Underlying Conditions

If a structural cause such as a deviated nasal septum, nasal polyps, or tonsillar hypertrophy is identified, surgical intervention may be recommended to restore nasal breathing and reduce stress on the throat lining.

Outlook and Prognosis

With consistent treatment of the underlying cause, chronic pharyngitis can be well managed and symptoms significantly reduced. However, if the triggering factors are not addressed, the condition tends to persist with ongoing discomfort. In rare cases, chronic mucosal inflammation may increase the risk of further complications. Regular medical follow-up is recommended.

References

Deutsche Gesellschaft fur Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie (DGHNO-KHC): Guidelines on Pharyngitis. AWMF Register, 2022.
Probst R., Grevers G., Iro H.: Otorhinolaryngology, Head and Neck Surgery. 4th edition. Georg Thieme Verlag, Stuttgart, 2018.
Eccles R., Weber O. (eds.): Common Cold. Birkhauser Verlag, Basel, 2009.

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