Stomatitis: Types, Symptoms, Causes, and Treatment

Stomatitis is a general term for inflammation affecting the mucous membranes inside your mouth and on your lips. It includes various types, most notably cold sores and canker sores. This oral inflammation can occur anywhere in the mouth, often causing pain and interfering with eating and drinking.

Understanding the specific type of stomatitis you have is crucial for appropriate treatment. The most common forms include:

Aphthous Stomatitis (Canker Sores) Aphthous stomatitis, commonly known as canker sores or mouth ulcers, is a prevalent type of stomatitis. These spherical red or white lesions appear inside the mouth, often causing pain or discomfort that hinders eating and drinking. Though the precise cause of canker sores is unclear, common triggers include:

• Stress and fatigue
• Vitamin deficiencies
• Hormonal changes Unlike some other stomatitis types, canker sores are not contagious, so direct contact with others isn't a concern.

Herpetic Stomatitis (Cold Sores / Oral Herpes) Herpetic stomatitis, or cold sores (oral herpes), is another frequent stomatitis type. Caused by the Herpes Simplex virus (HSV-1), cold sores manifest as small, fluid-filled blisters on the lips, gums, or tongue. Initial oral herpes outbreaks can involve fever, headaches, and nausea. Recurrences often begin with a tingling sensation before a blister forms, followed by pain. Cold sores are highly contagious. Individuals with herpetic stomatitis should avoid close contact, particularly with infants, young children, and immunocompromised individuals, due to potential severe primary infections.

Angular Cheilitis (Cracked Corners of the Mouth)  Angular cheilitis is a common inflammatory condition that affects the corners of the mouth. It often develops when saliva repeatedly collects in these areas, keeping the skin moist and prone to irritation, cracking, and infection. In some cases, the condition is related to underlying factors such as poorly fitting or unclean dentures, oral appliances, or changes in bite alignment that allow saliva to pool at the mouth corners. Bacterial or fungal overgrowth, nutritional deficiencies, eczema, and other skin conditions can also contribute.

While angular cheilitis is usually not serious, it can be painful and persistent. Treatment typically focuses on addressing the underlying cause, such as improving denture hygiene or fit, keeping the area dry, and using topical antifungal or antibacterial ointments. Dental procedures are not always necessary and are generally only considered if an oral appliance or dental factor is contributing to the condition.

Denture Stomatitis Denture wearers may occasionally experience inflammation or tenderness inside their mouth. This is often denture stomatitis, a common condition caused by yeast overgrowth (Candida), the fungus behind oral thrush. Symptoms of denture stomatitis include:

• Canker sores
• Angular cheilitis
• Red/white patches
• Mouth soreness

Inadequate oral hygiene is a common contributing factor to denture stomatitis, which makes proper denture and mouth cleaning especially important. Treatment may include antifungal medications, laser therapy, and improvements to denture hygiene or fit. In some cases, minor adjustments to the supporting bone or gum tissue may be recommended to help the denture sit more comfortably and reduce irritation. These measures are typically conservative and focused on improving comfort and oral health rather than extensive dental procedures.

Allergic Contact Stomatitis

Allergies or sensitivities can also contribute to stomatitis in some individuals. When the oral tissues react to a specific ingredient, symptoms such as mild burning, swelling, or inflammation may occur. While most people tolerate toothpaste and mouthwash without any issues, a small number may be sensitive to certain ingredients or flavorings. Strong or spicy flavors, such as cinnamon, especially those found in gums or extra‑hot cinnamon products, are more commonly associated with irritation. If symptoms develop, switching to a milder or differently flavored oral care product may help resolve discomfort.

Stomatitis can arise from diverse reasons, with symptoms varying based on the underlying cause.

Across its different types, common stomatitis symptoms include:

•  Mouth sores (ulcers, blisters, red/white patches)
•  Oral pain, often burning
•  Mouth swelling and redness
•  Difficulty eating or speaking

Various factors contribute to stomatitis, with some being more common. Causes of stomatitis can include:

• Oral trauma (burns, surgical damage, biting tongue/cheek)
• Bacterial infections (often due to poor oral hygiene)
• Fungal infections
• Viral infections (e.g., HSV-1)
• Nutritional deficiencies (Vitamin B12, iron, folic acid)
• Autoimmune diseases (Crohn’s, lupus)
• Allergic reactions
• Irritating foods

Effective stomatitis treatment methods abound. At-home, over-the-counter (OTC), and medical interventions can all alleviate and resolve the condition.

Home Remedies for Stomatitis Relief: For mild stomatitis, trying home remedies is advisable before professional help. Common at-home approaches include:

• Saline (salt water) rinses: Calm inflammation and reduce pain.
• Baking soda rinses: Neutralize acid, aiding sore area healing.
• Honey: Natural antibacterial, anti-inflammatory; eases stomatitis pain.
• Aloe vera gel: Soothes mouth sores.
• Dietary changes: Avoid acidic, spicy, or rough foods that worsen stomatitis. If these methods don't suffice, consider OTC medications or professional medical consultation for the best stomatitis treatment.

Over-the-Counter Medications Effective stomatitis treatment can come from several OTC medications, including:

• Antiseptic mouthwashes: OTC antimicrobial/antiseptic rinses reduce bacteria, soothe irritation, and aid healing.
• Pain-relieving creams: Alleviate pain from severe sores and deter touching, promoting healing.
• Hydrogen peroxide rinses: Mild antiseptic; ease irritation by cleansing and removing mucus.
• Antihistamines or corticosteroids: Used in severe cases to reduce inflammation.

Medical Treatments If at-home or OTC stomatitis treatments fail, medical attention may be needed. Your doctor can address persistent stomatitis with these methods:

• Antiviral medications: For herpes-related stomatitis, antivirals can manage symptoms and pain (e.g., cold sore treatment), though HSV-1 isn't curable.
• Antifungal treatments: Doctors may prescribe antifungals for denture stomatitis treatment to eradicate thrush and resolve stomatitis.
• Antibiotics: If stomatitis stems from a bacterial infection, antibiotics will likely cure it.
• Steroid treatments: For autoimmune stomatitis (associated with certain autoimmune conditions like eczema), steroid creams or treatments can reduce effects and calm symptoms.

While complete stomatitis prevention isn't always possible, several steps can lower your risk. A balanced, nutrient-rich diet is key, as vitamin deficiencies are a common cause of stomatitis. Hydration also helps prevent dry mouth, which can lead to angular cheilitis. Crucially, maintaining good oral health using protective and cleansing products minimizes trauma and helps prevent stomatitis.

Medical attention for your stomatitis is advisable if any of these situations apply:

• Stomatitis lasting over two weeks
• Large, extremely painful, or spreading mouth sores
• Fevers or difficulty swallowing
• Swollen lymph nodes
• Frequent stomatitis recurrence

Common oral health issues can include cavities, gum disease, staining and sensitivity. The main culprit of which is often plaque buildup—a sticky film of bacteria that forms on teeth. If not treated, cavities and gum disease can lead to tooth loss and may even affect your overall health.

By following a complete oral care routine, you can help nip these issues in the bud, for a stronger, healthier smile:

• Protect your mouth with Crest: Make sure to brush twice a day with a stannous fluoride toothpaste like Crest Pro-Health Advanced Deep Clean Toothpaste. Crest toothpaste formulated with stannous fluoride fights cavities and tooth decay, strengthens enamel, fights sensitivity, and provides lasting protection against plaque buildup with twice-daily brushing.
• Rinse with Crest Pro-Health Complete Clean Mouthwash: Swish with this alcohol-free, antibacterial mouthwash to help rinse away leftover plaque, support gum health, and leave your mouth feeling clean and fresh.
• Brush 2x/day with an Oral-B iO Electric Toothbrush: An Oral-B iO electric toothbrush, helps remove 100% more plaque than a regular manual toothbrush. The dentist-inspired round brush head surrounds each tooth as it adapts to the curves of teeth and gums to ensure a cleaner, healthier smile—even in hard-to-reach areas.
• Use String Floss: Flossing once a day removes plaque and trapped food between teeth. Adding flossing to your routine can help flush away remaining particles and plaque from hard‑to-reach areas, giving you an extra layer of protection and promoting healthier gums.