Throat ulcers are open sores that develop on the mucous membranes lining the throat, including the pharynx (back of the throat), tonsils, or upper oesophagus. These lesions appear as white, yellow, or grey patches surrounded by inflamed red tissue, and may cause discomfort when swallowing or speaking. Unlike common mouth ulcers on the lips or inside the cheeks, throat ulcers develop deeper in the oral cavity and can be more challenging to see without proper medical examination. Throat ulcers can affect individuals across age groups, and certain risk factors and underlying conditions can increase susceptibility.
Throat Ulcer in Singapore
Throat ulcers can make eating, drinking, and speaking painful, significantly affecting your daily life. These sores require proper medical evaluation to identify the cause and determine appropriate treatment. At our clinic, our ENT Specialist provides treatment for throat ulcers in Singapore, using diagnostic methods and tailored treatments for each patient’s condition. Whether you’re experiencing recurring ulcers or persistent throat pain, understanding your condition is the first step towards management and recovery. Individual results and timelines may vary.
Dr Gan Eng Cern
MBBS
MRCS (Edin)
mmed (orl)
FAMS
What are Throat Ulcers?
Types of Throat Ulcers
Aphthous Ulcers
Aphthous ulcers, commonly known as canker sores, can occasionally develop in the throat area. These benign ulcers may appear as round or oval lesions with a white or yellow centre and red border. They may heal within two weeks without scarring and are not contagious.
Viral Ulcers
Viral infections can cause throat ulcers. Herpangina, caused by Coxsackie virus, creates small blisters that rupture into ulcers. Herpes simplex virus can also cause painful throat ulcers, particularly in immunocompromised individuals.
Bacterial Ulcers
Bacterial infections can lead to ulcer formation, particularly following untreated strep throat or other bacterial pharyngitis. These ulcers often appear alongside other symptoms, such as fever and swollen lymph nodes.
Traumatic Ulcers
Physical injury to the throat from sharp foods, medical procedures, or accidental trauma can result in ulcer formation. These may heal once the source of irritation is removed.
Treatment-Related Ulcers
Chemotherapy and radiation therapy for head and neck cancers can cause throat ulcers as a side effect. These mucositis-related ulcers can be severe and may require specialised management.
Causes & Risk Factors
Causes
Throat ulcers can develop from various underlying factors:
- Infections: Viral infections (HSV, CMV, EBV), bacterial infections (Streptococcus, tuberculosis), and fungal infections (Candida) in immunocompromised patients
- Autoimmune conditions: Behçet’s disease, lupus, and inflammatory bowel diseases can manifest with throat ulcers
- Medications: Certain drugs, including some antibiotics, NSAIDs, and chemotherapy agents
- Acid reflux: Chronic gastro-oesophageal reflux disease (GORD) causing acid damage to throat tissues
- Nutritional deficiencies: Lack of vitamin B12, folate, iron, or zinc
Risk Factors
- Weakened immune system due to HIV/AIDS, diabetes, or immunosuppressive medications
- Smoking and alcohol consumption
- Poor oral hygiene allowing bacterial overgrowth
- Stress and fatigue compromising immune function
- History of allergies or food sensitivities
- Recent throat surgery or intubation
- Family history of recurrent aphthous ulcers
- Exposure to irritants including spicy foods or environmental pollutants
Several factors may increase the likelihood of developing throat ulcers:
Signs & Symptoms
Mild Symptoms
- Throat discomfort or scratchiness
- Mild pain when swallowing
- Sensation of something stuck in the throat
- Slight voice changes or hoarseness
- Occasional burning sensation
- Minor difficulty with certain foods
Moderate Symptoms
- Persistent throat pain even when not swallowing
- Difficulty swallowing liquids and solids (dysphagia)
- Ear pain (referred pain from throat)
- Swollen lymph nodes in the neck
- Bad breath (halitosis)
- Increased saliva production
- Need to modify diet to soft foods
Severe Symptoms
- Intense, constant throat pain
- Complete inability to swallow (including saliva)
- High fever above 38.5°C
- Difficulty breathing or a feeling of the throat closing
- Blood in saliva or when coughing
- Significant weight loss from inability to eat
- Signs of dehydration
Throat ulcer symptoms typically develop gradually over several days, though viral causes may have a more sudden onset. The severity and duration depend on the underlying cause, with simple ulcers often healing within two weeks, while others may persist longer without proper treatment.
Experiencing these symptoms?
Consider consulting with an ENT specialist for evaluation and appropriate management.
When to See an ENT Specialist
Seek immediate medical attention if you experience severe symptoms such as difficulty breathing, inability to swallow saliva, high fever, or signs of dehydration. These symptoms may indicate a severe infection or complication requiring urgent treatment.
Schedule a consultation with an ENT specialist if throat ulcers persist for more than 2 weeks, recur frequently, or are accompanied by unexplained weight loss, persistent hoarseness, or blood in your saliva. Early evaluation is particularly important for smokers or individuals with a history of head and neck cancer, as persistent ulcers may require biopsy to rule out malignancy.
During your consultation, the ENT specialist can examine your throat with medical instruments, review your medical history, and discuss your symptoms in detail. This evaluation aims to help determine the underlying cause and guide treatment planning. The specialist may also use a flexible endoscope to visualise areas of the throat that cannot be seen with standard examination.
Diagnosis & Testing Methods
Accurate diagnosis of throat ulcers requires systematic evaluation beginning with a detailed medical history and physical examination. Your ENT specialist may examine your throat using a laryngoscope or a flexible nasopharyngoscope, which provides magnified visualisation of the throat structures and any ulcerations.
Laboratory tests may include throat swabs for bacterial and viral cultures to identify infectious causes. Blood tests can reveal nutritional deficiencies, autoimmune markers, or signs of systemic infection. Complete blood count (CBC) helps assess for infection or blood disorders, while specific antibody tests may be ordered if autoimmune conditions are suspected.
For persistent or atypical ulcers, a biopsy may be necessary to exclude malignancy or confirm specific inflammatory conditions. This procedure involves taking a small tissue sample under local anaesthesia for microscopic examination.
Additional investigations might include barium swallow studies or upper endoscopy if GORD or oesophageal involvement is suspected. Allergy testing may be recommended for patients with suspected allergic triggers. HIV testing might be suggested for patients with risk factors and recurrent or severe ulceration.
Treatment Options Overview
Topical Medications
Topical treatments may help relieve throat ulcers and support healing. Anaesthetic mouth rinses containing lidocaine can help numb the affected area, which may make eating and drinking easier. These are typically used before meals and can be prescribed in various concentrations based on severity. Antiseptic gargles may help prevent secondary infection, while corticosteroid rinses can help reduce inflammation and pain in non-infectious ulcers.
Oral Medications
Systemic medications can address underlying causes and provide comprehensive treatment. Antiviral drugs like aciclovir or valaciclovir may be prescribed for herpes simplex virus-related ulcers. Antibiotics can help treat bacterial infections; the specific type is determined by culture results. Antifungal medications such as fluconazole may be necessary for the treatment of candida-related ulcers, particularly in immunocompromised patients.
Pain Management Strategies
Pain control can help improve the quality of life during healing. Oral analgesics ranging from paracetamol to more potent prescription pain medications may be prescribed based on severity. Combination therapy using both topical and systemic pain relief may help provide comfort. Your ENT specialist typically creates a pain management plan tailored to your specific needs and medical history.
Nutritional Supplementation
Addressing nutritional deficiencies may support healing and help prevent recurrence. Vitamin B complex, folate, iron, and zinc supplements may be prescribed based on blood test results. Patients with poor oral intake may require liquid nutritional supplements or temporary nutritional support. Dietary counselling can help identify trigger foods and aims to provide adequate nutrition during recovery.
Immunomodulatory Therapy
For autoimmune-related ulcers, immunosuppressive medications may be necessary. Corticosteroids, either topical or systemic, can help reduce inflammation and support healing. Other immunomodulators, such as colchicine or thalidomide, might be considered for severe, recurrent cases under specialist supervision. Treatment duration and monitoring requirements vary based on the specific medication and underlying condition.
Laser Therapy
Low-level laser therapy may accelerate healing and relieve pain for certain types of throat ulcers. This non-invasive treatment aims to stimulate cellular repair and reduce inflammation. Sessions typically last 10-15 minutes and may be repeated several times weekly until healing occurs. While not suitable for all ulcer types, laser therapy can be a valuable option for selected cases.
Cauterisation
Chemical or electrical cauterisation may be performed for persistent ulcers that fail to respond to conservative treatment. Silver nitrate application creates a protective seal over the ulcer, which may help reduce pain and support healing. This office-based procedure requires local anaesthesia and may provide pain relief. Multiple applications may be necessary for complete resolution.
Every patient’s condition is unique.
Our ENT Specialist can assess your specific situation and recommend the most suitable treatment.
Complications if Left Untreated
Untreated throat ulcers may lead to complications affecting both local throat structures and overall health. Secondary bacterial infections may develop in ulcerated areas, potentially spreading to surrounding tissues and leading to abscess formation or cellulitis. In some cases, infection could spread to deeper neck spaces, which may require surgical drainage.
Chronic ulceration may lead to scarring and stricture formation, potentially causing swallowing difficulties. Persistent inflammation could affect the vocal cords, leading to hoarseness or voice changes. Nutritional deficiencies from prolonged difficulty eating might contribute to weakness, anaemia, and delayed wound healing.
Potential systemic complications include dehydration from reduced fluid intake and weight loss that may affect overall health. Untreated autoimmune conditions causing throat ulcers might progress to affect other organ systems. Of particular concern is the potential for malignant transformation in chronic ulcers or the possibility of missing an underlying condition through delayed evaluation.
Prevention
Preventing throat ulcers involves addressing modifiable risk factors and maintaining good oral and general health. Practice good oral hygiene with regular brushing, flossing, and the use of antiseptic mouthwash to reduce the bacterial load. Stay well-hydrated and avoid known trigger foods or irritants that have previously caused ulceration.
Quit smoking and limit alcohol consumption, as both irritate throat tissues and may impair healing. Manage stress through relaxation techniques, adequate sleep, and regular exercise to support immune function. Treat acid reflux promptly with appropriate medications and dietary modifications to help prevent acid-related throat damage.
Maintain nutrition with a balanced diet rich in vitamins and minerals. Consider supplementation if dietary restrictions or medical conditions affect nutrient absorption. Address any underlying medical conditions with appropriate specialist care and medication compliance. For those prone to recurrent ulcers, your ENT specialist may discuss prophylactic treatments.
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Frequently Asked Questions (FAQ)
How long does it take for throat ulcers to heal with treatment?
Healing time varies depending on the underlying cause and treatment approach. Simple aphthous ulcers may heal within 7-14 days with appropriate treatment. Viral ulcers may take 10-14 days to resolve. Bacterial infections may improve within a few days of starting antibiotics, with healing occurring over the following days. More complex cases, such as those related to autoimmune conditions or cancer treatment, may require several weeks of treatment. Your ENT specialist can provide a more specific timeline based on your diagnosis and treatment response.
Can throat ulcers be cancerous?
Most throat ulcers are benign and result from infections, trauma, or inflammatory conditions. However, persistent ulcers lasting more than three weeks require careful evaluation to exclude malignancy. Risk factors for cancerous ulcers include smoking, heavy alcohol use, HPV infection, and older age. Your ENT specialist can perform a thorough examination and may recommend a biopsy for any suspicious or non-healing ulcers. Early detection and treatment of throat cancer can improve outcomes, underscoring the importance of prompt evaluation of persistent ulcers.
What foods should I avoid when I have throat ulcers?
During active ulceration, avoid acidic foods like citrus fruits, tomatoes, and vinegar-based products that can irritate ulcers. Spicy foods, rough or sharp-textured items like chips or crusty bread, and very hot beverages should be avoided. Alcohol and carbonated drinks may cause additional discomfort. Choose soft, bland foods at room temperature, such as yoghurt, smoothies, mashed potatoes, and well-cooked pasta. Your ENT specialist or dietitian can provide a detailed dietary plan to help with adequate nutrition whilst promoting healing.
Are throat ulcers contagious?
The contagiousness of throat ulcers depends on their cause. Viral ulcers from herpes simplex virus or Coxsackie virus are contagious and can spread through saliva, shared utensils, or close contact. Bacterial infections causing ulcers may also be transmissible. However, aphthous ulcers, traumatic ulcers, and those from autoimmune conditions are not contagious. Proper hygiene, avoiding sharing personal items, and following your ENT specialist’s advice regarding isolation periods for infectious causes help prevent transmission.
Can stress cause throat ulcers?
Stress alone doesn’t directly cause throat ulcers, but it can impact immune function and may trigger or worsen ulcer formation in susceptible individuals. Chronic stress can weaken the immune system, making you more vulnerable to infections that cause ulcers. Stress may also trigger flares of autoimmune conditions associated with ulceration. Additionally, stress-related behaviours like poor diet, inadequate sleep, or increased alcohol consumption can contribute to ulcer development. Managing stress through counselling, relaxation techniques, and lifestyle modifications forms an integral part of preventing recurrent ulcers.
When should children with throat ulcers see an ENT specialist?
Children should see an ENT specialist immediately if they show signs of dehydration, difficulty breathing, or inability to swallow. Consultation is also warranted for throat ulcers lasting more than two weeks, recurring frequently, or accompanied by high fever, skin rashes, or joint pain. Children with underlying medical conditions or those not responding to initial treatment require specialist evaluation. Early assessment helps with appropriate treatment and helps identify any underlying conditions requiring management.
Conclusion
Throat ulcers can significantly affect daily comfort, but they are manageable with timely and appropriate care. Identifying the underlying cause, whether infectious, autoimmune, or related to irritation, guides the most effective treatment pathway and helps lower the chance of recurrence. Consulting an Ear Nose Throat specialist in Singapore supports accurate diagnosis and targeted treatment that addresses both symptoms and contributing factors.
Options may include topical medications, pain-relief strategies, and systemic therapies when needed. With proper guidance and monitoring, many patients experience meaningful symptom improvement and healing. Early evaluation and personalised care remain key to reducing complications and restoring comfort.
Take the First Step Towards Better Health
Living with throat ulcers can be challenging, but you don’t have to face it alone. Our ENT Specialist has experience diagnosing and treating throat ulcers using evidence-based approaches.
Dr Gan Eng Cern
MBBS
MRCS (Edin)
mmed (orl)
FAMS
With over 15 years of experience, Dr Gan specialises in the comprehensive management of a broad range of conditions related to the ear, nose and throat (ENT), and head and neck.
Dr. Gan has contributed to the academic field as a Senior Clinical Lecturer at the Yong Loo Lin School of Medicine, National University of Singapore. He underwent his subspecialty training in Rhinology (Nose & Sinus conditions) and Endoscopic Skull Base Surgery at the renowned St Paul’s Sinus Center, part of the University of British Columbia in Vancouver, Canada. He is recognised for his extensive research work, with numerous contributions to reputable international ENT journals. Dr Gan is also highly sought after as a speaker and has shared his surgical knowledge as a surgical dissection teacher at various prominent ENT conferences and courses.
- 2020 – Reader’s Choice Gold Award for Best ENT Specialist (Expat Living Singapore)
- 2016 – Best Educator Award (Eastern Health Alliance)
- 2016 – “Wow” Award (Patient Compliment)
- 2014 – Eastern Health Alliance Caring Award – Silver
- 2014 – 19th Yahya Cohen Memorial Lectureship (awarded by the College of Surgeons, Academy of Medicine Singapore for best scientific surgical paper)
- 2012 – Human Manpower Development Award (Ministry of Health, Singapore)
- 2007 – Singhealth Best Doctor Award
Qualifications
- MBBS – Bachelor of Science, Bachelor of Medicine, Bachelor of Surgery (University of New South Wales, Sydney, Australia)
- MRCS (Edin) – Member of the Royal College of Surgeons Edinburgh, United Kingdom
- MMed (ORL) – Master of Medicine in ENT (National University of Singapore)
- FAMS – Fellow of the Academy of Medicine Singapore
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A Specialist Clinic for Sinus, Snoring & ENT
38 Irrawaddy Road #08-45
Mount Elizabeth Novena Hospital
Singapore 329563
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