Understanding Cold Sores Inside Your Mouth
What Causes Cold Sores Inside the Mouth?
Cold sores inside the mouth are typically caused by herpes simplex virus type 1 (HSV-1), though they can occasionally result from HSV-2. Unlike external cold sores on the lips, intraoral herpes lesions often occur during primary infection or in immunocompromised individuals. The virus can affect various areas inside the mouth, including the gums, tongue, inner cheeks, and soft palate.
Recognising the Symptoms
The progression of cold sores inside the mouth follows a predictable pattern. Initially, you may experience tingling, burning, or sharp pain in the affected area. Within 24-48 hours, small fluid-filled vesicles appear, which can be particularly uncomfortable when eating, drinking, or speaking. These blisters typically measure 2-4mm in diameter and may cluster together. The vesicles eventually rupture, forming shallow, painful ulcers with red borders.
Unlike external cold sores, intraoral lesions tend to heal without forming the characteristic crust. The complete healing process usually takes 7-14 days, though symptoms may be more severe and prolonged compared to external outbreaks. During this time, you might experience difficulty eating acidic or spicy foods, increased sensitivity to temperature, and general mouth discomfort.
Treatment Options Available
Early intervention with antiviral medication can significantly impact the severity and duration of cold sores inside the mouth. Aciclovir tablets are commonly prescribed for oral herpes outbreaks, particularly for intraoral lesions where topical treatments may be less effective. At EverydayMeds, we offer Aciclovir 400mg tablets, which may help reduce symptoms when taken within the first 48 hours of onset.
The typical dosage for treating cold sores involves taking aciclovir tablets five times daily for five days, though your healthcare provider will determine the most appropriate treatment plan. Some patients may benefit from alternative antiviral medications such as valaciclovir, which offers less frequent dosing due to better oral absorption.
Managing Symptoms and Discomfort
While antiviral treatment addresses the underlying viral infection, symptom management remains important for comfort and recovery. Over-the-counter pain relievers may help manage discomfort, whilst avoiding spicy, acidic, or rough-textured foods can prevent further irritation. Maintaining good oral hygiene remains important, though you should use a soft-bristled toothbrush to avoid aggravating the lesions.
Cold liquids and ice chips may provide temporary relief from pain and inflammation. Some people find that avoiding known triggers, such as stress, excessive sun exposure, or certain foods, helps prevent future outbreaks. However, individual triggers vary significantly between people.
When to Seek Medical Advice
Whilst cold sores inside the mouth often resolve naturally, certain circumstances warrant medical consultation. Seek advice if symptoms persist beyond two weeks, if you develop fever or swollen lymph nodes, or if lesions are unusually large or numerous. Immunocompromised individuals should always consult healthcare providers promptly when experiencing oral herpes symptoms.
People experiencing their first outbreak may benefit from medical evaluation to confirm the diagnosis and discuss treatment options. At EverydayMeds, our online consultation service allows you to discuss symptoms with qualified healthcare professionals who can recommend appropriate treatments, including prescription antivirals when suitable.
