Behcet's Disease

What is Behcet's Disease?

Behcet's Disease is a rare condition that causes inflammation in blood vessels throughout your body. It is a type of systemic vasculitis, which means it affects the small vessels that carry blood to your organs and tissues. When these vessels become inflamed, they can cause damage to many parts of your body.

This immune-mediated condition happens when your immune system mistakenly attacks your own blood vessels. The disease is named after Dr. Hulusi Behcet, who first described it in 1937. It can affect anyone, but it is most common in people from Mediterranean countries, the Middle East, and East Asia.

Behcet's Disease is chronic, which means it lasts a long time and often comes and goes in flares. During a flare, symptoms get worse. Between flares, you may feel relatively normal. The disease affects everyone differently, and some people have mild symptoms while others experience more serious complications.

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Symptoms

Painful mouth sores that look like canker sores and appear repeatedly
Genital sores that are similar to mouth ulcers and may leave scars
Eye inflammation causing redness, pain, blurred vision, or light sensitivity
Skin problems including acne-like sores, red nodules, or ulcers
Joint pain and swelling, especially in knees, ankles, wrists, and elbows
Inflammation in the digestive tract causing stomach pain and diarrhea
Blood vessel inflammation leading to clots or aneurysms
Headaches, fever, confusion, or poor balance from nervous system involvement

Some people experience only a few symptoms, while others have many. Mouth sores are usually the first and most common symptom. The pattern and severity of symptoms can vary greatly from person to person.

Causes and risk factors

The exact cause of Behcet's Disease remains unknown. Researchers believe it involves a combination of genetic factors and environmental triggers. People with certain genes, particularly the HLA-B51 gene variant, have a higher risk of developing the condition. However, not everyone with this gene gets the disease.

Environmental factors may trigger the immune system in people who are genetically susceptible. These triggers might include bacterial or viral infections, especially Saccharomyces cerevisiae, a type of yeast. Other risk factors include geographic location, with higher rates in the Mediterranean region and Asia, age between 20 and 40 years, and being male, which often means more severe symptoms. The disease is not contagious and cannot be passed from person to person.

How it's diagnosed

Diagnosing Behcet's Disease can be challenging because there is no single definitive test. Doctors typically use clinical criteria based on symptoms, especially recurrent mouth ulcers combined with other signs. Blood tests can help rule out other conditions and check for markers of inflammation and immune activity.

Specialized blood tests may include HLA-B genetic testing, cardiolipin antibodies to assess vascular involvement, Saccharomyces cerevisiae antibodies which may indicate disease activity, and interleukin 17 levels to measure inflammatory activity. Your doctor may also perform a pathergy test, where a small needle prick is made on your skin to see if it forms a specific type of bump. Talk to your doctor about which specialized tests are right for your situation.

Treatment options

Anti-inflammatory medications like colchicine to reduce pain and inflammation
Corticosteroids such as prednisone to control severe flares
Immunosuppressive drugs including azathioprine or cyclosporine for serious symptoms
Biologic medications like anti-TNF therapy for resistant cases
Topical treatments for mouth and skin sores
Rest during flares to help your body heal
Stress management techniques since stress can trigger flares
Avoiding foods that irritate mouth sores, such as spicy or acidic foods
Regular eye exams to catch and treat eye inflammation early
Working with a rheumatologist who specializes in inflammatory conditions

Frequently asked questions

Recurrent mouth sores are the hallmark symptom of Behcet's Disease. These painful ulcers look like canker sores and appear at least three times in a 12-month period. Most people with Behcet's Disease experience mouth sores as their first symptom. The ulcers typically heal within one to three weeks but keep coming back.

No, Behcet's Disease is not contagious and cannot be spread from person to person. It is an autoimmune condition where your own immune system attacks your blood vessels. While infections may trigger the disease in people who are genetically susceptible, the disease itself does not pass between people.

Behcet's Disease is considered rare in most parts of the world. It is most common along the ancient Silk Road, from the Mediterranean to Japan, where it affects 10 to 100 people per 100,000. In the United States and Northern Europe, it affects fewer than 1 in 100,000 people. The disease can occur at any age but usually starts between ages 20 and 40.

Several specialized blood tests can support a Behcet's Disease diagnosis. These include HLA-B genetic testing to check for the HLA-B51 gene variant, cardiolipin antibodies to assess vascular involvement, Saccharomyces cerevisiae antibodies that may indicate inflammatory activity, and interleukin 17 levels to measure immune response. No single blood test can definitively diagnose the condition, so doctors use a combination of tests and clinical symptoms.

Yes, eye involvement occurs in 30 to 70 percent of people with Behcet's Disease. Eye inflammation can cause redness, pain, blurred vision, and sensitivity to light. This is one of the most serious complications because it can lead to vision loss if not treated promptly. Regular eye exams are essential for anyone diagnosed with Behcet's Disease.

Common flare triggers include stress, infections, fatigue, and certain foods. Some people notice that spicy or acidic foods make mouth sores worse. Physical injury or trauma may also trigger symptoms in some individuals. Keeping a symptom diary can help you identify your personal triggers so you can avoid them.

There is currently no cure for Behcet's Disease. However, treatments can effectively manage symptoms and prevent serious complications. Many people live normal lives with proper treatment and monitoring. The goal of treatment is to reduce inflammation, prevent flares, and protect vital organs like your eyes and nervous system.

Yes, lifestyle changes can help reduce flare frequency and severity. Getting adequate rest during flares helps your body heal. Managing stress through meditation, yoga, or counseling may reduce triggers. Avoiding foods that irritate mouth sores and maintaining good oral hygiene can also help. Regular follow-up with your doctor is important for monitoring disease activity.

Behcet's Disease has a genetic component but does not follow a clear inheritance pattern. Having a family member with the condition increases your risk, especially if you carry the HLA-B51 gene variant. However, most people with this gene never develop the disease. Environmental factors also play an important role in whether someone develops symptoms.

The outlook varies widely depending on which organs are affected and how well the disease responds to treatment. Many people experience periods of remission where symptoms are minimal or absent. Early diagnosis and treatment can prevent serious complications. Regular monitoring and working closely with a rheumatologist help ensure the best possible outcome.