What Is Behçet's Disease and Who Gets It?
Behçet's disease is a rare condition that causes painful ulcers (sores) in your mouth and other parts of your body. It's an inflammatory disease—your immune system attacks your own blood vessels and tissues. The disease was first described in 1937 by a Turkish doctor named Behçet.
This disease is more common in certain parts of the world. If you're from Turkey, the Middle East, North Africa, or East Asia (especially Japan), you're at higher risk. It's quite rare in North America and Northern Europe. The disease usually starts in people's 20s through 40s, though sometimes children get it too.
The most common symptom is mouth ulcers—about 95% of people with Behçet's disease have them. These are often the first sign of the disease. If you have repeated mouth sores, your dentist might ask if you have other symptoms that could suggest Behçet's disease.
How Doctors Diagnose Behçet's Disease
Diagnosis requires mouth ulcers plus at least two other symptoms. These include genital ulcers (sores in private areas), eye inflammation, skin sores, or a special skin test called the pathergy test (where a needle prick causes an abnormal reaction).
The mouth ulcers in Behçet's disease are specific. They're medium to large (about the size of a small pea to a large bean), have a yellowish-white center with a red border, cause pain, and heal in 1-3 weeks. You might get three or more of these ulcers within 12 months. Some people have continuous ulcers—new ones form before old ones heal.
If you have recurrent mouth ulcers, talk to your doctor. They might perform blood tests or refer you to a rheumatologist (a doctor specializing in inflammatory diseases) for diagnosis.
The Real Causes: Immune System Dysfunction
Behçet's disease happens because your immune system malfunctions. Your body's white blood cells, especially neutrophils, become hyperactive and attack blood vessels. This causes inflammation and tissue damage, creating those painful ulcers.
There's a genetic component—the disease runs in families in certain ethnic groups. But genetics alone don't cause Behçet's—something environmental probably triggers it in genetically susceptible people. Researchers suspect streptococcal bacteria might be involved, but this isn't proven.
Mouth Ulcers: Pain and Characteristics
The mouth ulcers are painful and interfere with eating and speaking. Unlike simple canker sores that happen occasionally, Behçet's ulcers recur frequently. You might have multiple ulcers at the same time. They typically appear on the inside of your cheeks, gums, palate, or under your tongue.
Some patients experience flare-ups during stress, illness, or certain seasons (winter is worse for some). The ulcers themselves don't cause permanent mouth damage, though large ones can scar.
Other Symptoms Beyond the Mouth
About 70-80% of people with Behçet's disease develop genital ulcers—painful sores on private areas. These are larger and more painful than mouth ulcers and can scar, potentially affecting fertility or sexual function.
About half of people with Behçet's develop eye inflammation that can threaten vision. This is the most serious symptom—without treatment, it can cause blindness. Some people experience skin sores, and a small percentage develop neurological complications.
Treating Mouth Ulcers: What Works
For mouth ulcers, topical treatment is first-line. A steroid cream (triamcinolone) applied directly to ulcers 4 times daily speeds healing and reduces pain. Numbing gels provide temporary comfort.
For systemic treatment, colchicine (a medication originally used for gout) reduces ulcer frequency by about 50%. Corticosteroids work quickly but have side effects with long-term use. Immunosuppressive medications (drugs that quiet an overactive immune system) prevent flare-ups, and biologic drugs (TNF-inhibitors) work for severe cases that don't respond to other treatments.
Your doctor will determine which medications are right for your specific situation and disease severity.
Protecting Your Mouth
During ulcer flare-ups, be gentle with your mouth. Use a very soft toothbrush and avoid aggressive brushing. Electric toothbrushes (surprisingly) are gentler than manual brushing. Use salt-water rinses for comfort.
Avoid foods that irritate ulcers: spicy foods, acidic foods (like citrus), hard foods (chips, nuts, crusty bread), and anything with rough edges. Soft, cool foods are your friends during flare-ups.
Trauma makes ulcers worse, so avoid aggressive dental scaling and delay elective procedures until your ulcers heal. Tell your dentist you have Behçet's disease so they can modify their approach.
Stress, poor sleep, and seasonal changes often trigger flare-ups. Managing stress and maintaining good sleep habits helps reduce ulcer frequency.
When to Suspect Behçet's Instead of Normal Ulcers
Regular canker sores are usually smaller, happen occasionally, and go away without treatment. Behçet's ulcers are larger (bigger than 1cm), happen frequently (three or more per year), are more numerous, cause significant pain, and often recur before previous ulcers heal.
If you also have genital ulcers, eye problems, or skin sores, Behçet's disease is more likely. The combination of oral ulcers with genital ulcers and eye inflammation is very specific to Behçet's disease.
The Role of Your Dentist
Your dentist is often the first to notice recurrent mouth ulcers. Mentioning mouth ulcers to your dentist and asking if they could be related to systemic disease is important. If your dentist suspects Behçet's, they'll refer you to your doctor or a specialist.
Your dentist can provide topical treatments for ulcer pain and healing. They can also help by minimizing trauma during dental procedures. Tell your dentist about your Behçet's disease so they adapt their care.
Living With Behçet's Disease
Behçet's disease is manageable with proper treatment. Medications can significantly reduce ulcer frequency and prevent serious complications like vision loss. The severity varies greatly—some people have mild disease, others have more serious problems.
It's important to work with a rheumatologist for overall disease management, especially for eye involvement. Your dentist supports you with oral ulcer treatment and modified dental care.
When to Ask for Specialist Referral
If you have had more than three mouth ulcers in the past 12 months, or if you have mouth ulcers plus other symptoms (like genital ulcers, eye inflammation, or unusual skin reactions), ask your dentist or doctor for a referral to a rheumatologist. A rheumatologist is a doctor who specializes in diseases involving inflammation and the immune system. They're the expert in diagnosing and treating Behçet's disease.
Catching Behçet's disease early is important. The longer it goes undiagnosed, the greater the risk of serious complications—especially eye disease that could affect your vision. Early diagnosis means early treatment, which prevents these serious problems.
Working With Your Medical Team
Managing Behçet's disease requires teamwork between different doctors. Your primary care doctor oversees your general health. Your rheumatologist manages the disease itself and prescribes systemic medications. Your dentist treats your mouth ulcers and prevents trauma. If you have eye inflammation, an eye doctor (ophthalmologist) works with your rheumatologist.
Make sure all your doctors know what medications you're taking and what treatments you're receiving. This prevents harmful interactions and ensures everyone is working toward the same goals.
Living Better With Behçet's
Many people with Behçet's disease live well-managed lives with proper treatment. The key is finding the right medications and staying consistent with them. Some people find that their disease severity changes over time—sometimes flare-ups are worse, sometimes they're milder.
Keep a journal of when ulcers appear and what triggers them. This helps you identify patterns. For example, you might notice ulcers are worse during stressful periods or after certain foods. Understanding your personal triggers helps you reduce flare-ups.
Stress management, good sleep, and avoiding foods that irritate ulcers all help reduce how often new ulcers form. Some people benefit from stress-reduction techniques like meditation, yoga, or counseling. These are worth trying alongside medical treatment.
Important Reminders
Never ignore new symptoms. If you notice genital ulcers, eye redness or pain, or unusual skin changes, tell your doctor right away. These could indicate Behçet's disease progression or a new complication.
Don't delay dental procedures if you need them, but discuss your Behçet's disease with your dentist first. They can plan the procedure when your ulcers are fewer and less severe, and they can use gentler techniques to minimize trauma.
If you're taking immunosuppressive medications for Behçet's disease, you're more vulnerable to infections. Be extra careful about oral hygiene, and tell your dentist if you have signs of infection (increasing pain, swelling, or discharge from ulcers).
Related reading: Risk and Concerns with Mouth Ulcer Care and Oral Cancer Screening Saves Lives.
Conclusion
Behçet's disease causes recurrent painful mouth ulcers and affects other parts of the body. If you have frequent mouth ulcers (three or more per year), especially if accompanied by genital ulcers or eye problems, talk to your doctor. Dentists can help with topical treatment and trauma avoidance. Modern medications effectively control symptoms and prevent serious complications. Working with a rheumatologist and your dentist provides comprehensive management of this condition.
The good news is that Behçet's disease is manageable. Many people have effective symptom control and maintain good quality of life. Early diagnosis, proper medications, and coordinated care between your medical team lead to the best outcomes. Don't hesitate to seek help if you suspect you have Behçet's disease.
> Key Takeaway: It's an inflammatory disease—your immune system attacks your own blood vessels and tissues. The disease was first described in 1937 by a Turkish doctor named Behçet.