How to Relieve Behçet's Mouth Ulcer Pain

Severe mouth ulcers are one of the most common and painful symptoms of Behçet’s disease. While you are waiting for systemic medications to take effect, you can use several at-home strategies to relieve the severe pain. These include applying prescribed topical corticosteroid pastes, using numbing gels or barrier-forming mouth rinses, adjusting your diet to avoid irritating foods, and modifying your oral hygiene routine to prevent further injury to the sensitive tissues.

Use Topical Treatments and Rinses

Topical treatments provide direct, localized relief to the ulcers in your mouth.

• Corticosteroid Pastes: Your doctor may prescribe topical corticosteroid pastes. These are applied directly to the ulcer to reduce inflammation and speed up healing ^[1]. For best results, gently pat the ulcer dry with a cotton swab before applying the paste, and try applying it after meals or before bedtime to maximize the time the medication stays in contact with the lesion.
• Numbing Gels: Over-the-counter or prescription numbing gels containing anesthetics like lidocaine can temporarily numb the area, making it easier to eat and drink ^[2]. However, you must use these safely: using too much can cause toxicity ^[3]. Furthermore, if the gel numbs your throat, it can impair your ability to swallow and create a choking risk ^[4][5]. Be careful not to bite your numb cheek or tongue while eating.
• Barrier-Forming and Mucoadhesive Rinses: Products containing hyaluronic acid or advanced hydrogels form a protective coating over the ulcers ^[6][7][8]. This barrier shields the raw tissue from irritation, helping to relieve pain and facilitate healing. Look for over-the-counter rinses or gels that list hyaluronic acid as an active ingredient.

Adjust Your Diet

What you eat can significantly impact your comfort level when you have active mouth ulcers.

• Avoid Irritating Foods: Acidic, salty, and spicy foods can cause severe stinging and burning when they touch open ulcers. Avoid items like citrus fruits, tomatoes, spicy curries, and salty snacks ^[9][10].
• Watch for Triggers: Some people with Behçet’s disease notice that specific foods—such as walnuts, eggplant, or melon—can trigger flare-ups or worsen existing lesions ^[11]. Keeping a food diary may help you identify and avoid your personal triggers.
• Stay Hydrated: It is crucial to drink plenty of fluids, even when swallowing is painful. If plain water irritates your mouth, try drinking cool or room-temperature chamomile tea, or suck on ice chips.

Modify Your Oral Hygiene Routine

Keeping your mouth clean is essential to prevent secondary infections, but you must do so gently to avoid aggravating the ulcers.

• Use Extra-Soft Toothbrushes: Switch to an extra-soft-bristled toothbrush to minimize mechanical irritation and protect the delicate lining of your mouth ^[12]. If brushing is too painful, ask your doctor about a gentle antibacterial rinse to use temporarily.
• Avoid Sodium Lauryl Sulfate (SLS): SLS is a common foaming agent in many commercial toothpastes. Studies suggest that avoiding toothpastes with SLS can improve oral wound healing and reduce irritation ^[13][14]. Look for toothpastes specifically labeled as “SLS-free.”
• Avoid Alcohol-Based Mouthwashes: Alcohol can cause severe burning and dry out the mouth, which can delay the healing of open ulcers.

Manage Stress and Lifestyle Factors

• Manage Stress: Psychological stress and nervous tension are commonly reported triggers for the recurrence of oral ulcers ^[11]. Finding ways to relax and manage stress can be an important part of your overall pain management strategy.

When to Seek Additional Help

While at-home management is important, you should contact your doctor if:

• The pain is so severe that you cannot drink fluids, putting you at risk for dehydration.
• You notice white patches in your mouth, which could be a sign of a secondary fungal infection (oral thrush) from using topical steroids.
• Your ulcers are not responding to these measures and you need an adjustment to your systemic medications.