Angular Stomatitis: Causes, Symptoms & Treatment Tips

Oral Conditions

Angular Stomatitis Causes Symptoms and Treatment Tips

Published March 20, 2026

Have you noticed painful cracks or sores forming at the corners of your mouth? You might be dealing with angular stomatitis — a common but often misunderstood oral condition that can make eating, speaking, and smiling genuinely uncomfortable. Whether it appears as mild redness or deep, bleeding fissures, angular stomatitis deserves prompt attention. Understanding what causes it and how to treat it effectively can help you find relief faster and protect your overall oral health.

Schedule your expert consultation at Brookfield Dental Associates Clinic in Springfield, VA today! Call (703) 913-1377 to book your appointment now!

What Is Angular Stomatitis?

Angular stomatitis, also called angular cheilitis or perleche, is an inflammatory condition that affects the corners of the mouth. It causes redness, cracking, soreness, and sometimes crusting or bleeding at the lip corners. While it may look minor, it can significantly impact your quality of life if left untreated.

Common Causes of Angular Stomatitis

Several factors can trigger or contribute to angular stomatitis. Identifying the root cause is key to finding the right treatment.

Nutritional Deficiencies

One of the most common causes is a deficiency in essential nutrients, particularly:

Iron
Zinc
B vitamins (especially B2, B3, and B12)

A poor diet or malabsorption issues can deplete these nutrients, weakening the skin barrier at the mouth’s corners.

Fungal or Bacterial Infections

The warm, moist environment at the corners of the mouth is an ideal breeding ground for Candida albicans (a yeast) and bacteria like Staphylococcus aureus. These infections are frequently found in people who drool during sleep or frequently lick their lips.

Ill-Fitting Dentures or Dental Issues

Poorly fitted dentures can cause the mouth to close more than usual, creating deep skin folds where moisture accumulates. This is a significant risk factor, especially for older adults. Similarly, missing teeth or malocclusion can alter your bite and contribute to the condition.

Other Contributing Factors

Dry or cracked lips from dehydration or cold weather
A weakened immune system
Certain medications like antibiotics or corticosteroids
Habits such as thumb-sucking or frequent lip-licking

Recognizing the Symptoms

Symptoms of angular stomatitis can range from mild to severe and typically include:

Redness and swelling at one or both corners of the mouth
Painful cracks or fissures
Dryness, crusting, or bleeding
A burning or itching sensation
Difficulty opening the mouth wide

If symptoms persist for more than two weeks, consult a dental or medical professional for a proper diagnosis.

Treatment Tips for Angular Stomatitis

Antifungal or Antibacterial Creams

If an infection is confirmed, your dentist or doctor may prescribe topical antifungal creams (like clotrimazole) or antibiotic ointments to clear the infection quickly.

Address Nutritional Deficiencies

Incorporating a balanced diet rich in leafy greens, lean meats, legumes, and whole grains can restore depleted nutrients. Your doctor may also recommend supplements if deficiencies are severe.

Improve Oral Hygiene and Dental Health

Maintaining excellent oral hygiene through regular brushing, flossing, and dental visits helps prevent secondary infections. If ill-fitting dentures are contributing to the problem, consult your dentist about adjustments or replacements.

Moisturize and Protect

Applying petroleum jelly or a zinc oxide-based barrier cream can soothe the skin and protect it from further irritation while healing takes place.

With the right care and professional guidance, angular stomatitis is highly treatable. Don’t ignore the signs — early intervention prevents the condition from worsening and helps restore your comfort and confidence.

FAQ

Is angular stomatitis contagious?

Angular stomatitis itself is not contagious, but if caused by a fungal or bacterial infection, those pathogens could potentially spread through direct contact.