Behcet disease living

Overview

Behçet's disease (also called Behçet's syndrome) is a rare, long-term condition that causes inflammation of the blood vessels throughout the body. This inflammation can lead to symptoms such as mouth and genital sores, skin problems, and eye inflammation. Behçet's can affect many parts of the body, and symptoms may come and go over time.

Behçet's disease is rare in the UK and most Western countries. It is most common in the Middle East, Central Asia, and East Asia. In the UK, it is estimated to affect fewer than 1 in 100,000 people.

Behçet's can affect men and women of all ages, but it usually first appears in the 20s and 30s. Men are often more severely affected, and in some regions, it is more common in men. Children and older adults can also develop it, though less commonly.

Symptoms

Common symptoms

• Mouth ulcers – painful sores inside the lips, cheeks, or on the tongue; they often heal within 1–2 weeks but may come back.
• Genital ulcers – painful sores on the scrotum, vulva, or penis that can leave scars.
• Skin problems – tender red bumps, acne-like spots, or red patches on the skin.
• Eye inflammation – redness, pain, blurred vision, or sensitivity to light; this needs urgent medical attention.
• Joint pain and swelling – especially in the knees, ankles, and wrists.
• Unexplained headaches, or in some cases, neurological symptoms like dizziness or difficulty balancing.

Symptoms in children

• Children with Behçet's may have the same symptoms as adults, but mouth ulcers are the most common early sign.
• They may also experience fever, tiredness, and joint pains.
• Because the disease is rare in childhood, diagnosis can be delayed, so it is important to see a specialist if symptoms persist.

Symptoms in older adults

• In older adults, Behçet's tends to appear after menopause and may be milder, but they may be more likely to have joint symptoms and eye problems.
• Always talk to a healthcare professional about any new symptoms, as they can also be caused by other conditions that are more common with age.

Causes

Main causes

• The exact cause of Behçet's disease is not fully understood. Most experts think it develops when a person's immune system reacts abnormally to a trigger in the environment, such as a virus or bacteria, in someone who has a genetic tendency.
• It is not contagious, so you cannot catch it from someone else. There is no evidence that stress or diet causes Behçet's, but they may make symptoms worse.

Risk factors

• Family history – having a close relative with Behçet's increases the risk, though it is not directly inherited.
• Genetic marker – a specific gene (HLA-B51) is more common in people with Behçet's, especially in certain countries, but not everyone with this gene develops the disease.
• Where you live – it is more common in the Mediterranean, Middle East, and Asia, likely due to genetic and environmental factors.

When to see a doctor

See a doctor urgently if:

• If you have sudden changes in vision, severe eye pain, severe headache, stroke-like symptoms, or signs of a blood clot, get emergency help immediately.
• If you have painful mouth or genital ulcers, abdominal pain, or fever, see a healthcare professional within a day or two.

Book a routine appointment if:

• If you are older than 18 and have had mouth ulcers three or more times in a year, along with other symptoms such as genital ulcers, skin problems, or eye pain, make an appointment with your GP or a specialist.
• Even without other symptoms, if mouth ulcers are frequent and painful, they can be treated, so ask for advice.

Diagnosis

There is no single test for Behçet's disease. A doctor – usually a specialist such as a rheumatologist – will ask about your symptoms, do a physical exam, and look at the pattern of sores. They will also rule out other conditions with similar symptoms, such as inflammatory bowel disease, lupus, or herpes.

Tests that may be done

• Blood tests to check for markers of inflammation and rule out other conditions (for example, a test for the HLA-B51 gene).
• Pathergy test – a small sterile needle is used to prick the skin; if a red bump appears within 24–48 hours, it can support the diagnosis (though not all people with Behçet's have this result).
• Eye exam by an ophthalmologist if there are eye symptoms.
• Endoscopy or colonoscopy if abdominal symptoms are present (to look at the digestive tract).
• Imaging like MRI or CT scans if brain or blood vessel involvement is suspected.

What to expect at your appointment

The diagnosis is based on clinical criteria – that means a doctor looks at your symptoms and medical history. For example, a diagnosis of Behçet's is often made when a person has recurrent mouth ulcers plus at least two of the following: genital ulcers, eye inflammation, skin lesions, or a positive pathergy test. It may take time because each symptom can be caused by many things, so be patient and keep a record of your symptoms to share with your doctor.

Treatment

Treatment for Behçet's aims to reduce inflammation, control symptoms like pain and fatigue, and prevent relapses. The right plan depends on your symptoms, how severe they are, and which parts of the body are affected. Because Behçet's can involve different specialists, your care may involve a team—for example, a rheumatologist, ophthalmologist, dermatologist, and neurologist.

Self-care at home

• Look after your mouth – use a soft toothbrush and avoid spicy or acidic foods that can trigger ulcers.
• Keep skin clean and dry, and use gentle moisturisers if dryness is a problem.
• Avoid stress where possible – stress can trigger flares for some people, so try relaxation techniques like deep breathing or yoga.
• If you smoke, think about quitting; smoking can make blood vessel problems worse.
• Protect your eyes with sunglasses and tell your doctor immediately if you notice any effect on your vision.
• Stay in touch with your care team and have regular check-ups.

Medical treatments

Medicines used to manage Behçet's disease include anti-inflammatory drugs, medicines that suppress or calm the immune system, and targeted therapies. Doctors will choose from these based on your specific symptoms. For example, topical treatments (like creams and mouthwashes) may be used for mouth ulcers, while stronger medicines are reserved for eye, nerve, or blood vessel involvement. All of these are prescription-only and need to be monitored by a specialist. It is important to take your medicines exactly as instructed and to tell your doctor about any side effects.

When is surgery considered?

Surgery is not usually the first option, but it may be needed for some complications. For example, surgery may be required for severe bowel involvement (like a perforation or intestinal blockage) or for certain blood vessel or nervous system problems. Always discuss these options with your surgeon and care team.

Living with this condition

Living with Behçet's can be challenging because symptoms come and go unpredictably. It can help to plan around good days, but also accept that you may need extra rest on bad days. Keep a symptom diary – it can help you notice patterns, such as foods, stress, or lack of sleep that might trigger flares. Remember that you are not alone, and many people with Behçet's find ways to manage their condition well.

Lifestyle tips

• Try to keep a regular sleep routine – tiredness can make symptoms worse.
• Manage stress with activities you enjoy, like reading, music, or mindfulness.
• If you work, talk to your employer about reasonable adjustments if you need rest breaks or time off for appointments.
• Join a support group or online community – sharing experiences with others who have Behçet's can be reassuring and helpful.

Diet and exercise

There is no special diet that cures Behçet's, but eating a balanced diet with plenty of fruits, vegetables and whole grains can support your overall health. Some people find that certain foods, such as citrus fruits, spicy foods, or nuts, worsen mouth ulcers – it may help to keep a food diary. Gentle exercise like walking, swimming, or gentle stretching can help with joint pain and fatigue, but listen to your body and rest when you need to. Always check with your doctor before starting a new exercise programme, especially if you have heart or eye involvement.

Mental health and emotional wellbeing

Living with a chronic condition can affect your mood and self-esteem. It is normal to feel frustrated, anxious, or depressed at times. If you notice lasting sadness, loss of interest, or sleep problems, talk to your doctor or encourage your care team to involve a mental health professional. For anyone in distress, it is important to remember that they can reach out to local mental health crisis lines or emergency services.

Prevention

Behçet's disease cannot be prevented, because the cause is not completely known and there is no way to change a genetic tendency. However, you may be able to reduce the frequency of flares by avoiding triggers like stress, smoking, and certain foods that seem to bother you. With good medical care, you can lower the risk of serious complications.

Vaccines

There is no vaccine to prevent Behçet's disease. However, staying up to date with recommended vaccines (such as flu and pneumonia vaccines) is important because people with Behçet's may be more vulnerable to infections, especially if they are taking medicines that affect the immune system. Discuss your vaccination plan with your healthcare team.

Screening programmes

There is no routine screening for Behçet's disease, because it is rare and symptoms are not specific. However, if you have been diagnosed, regular check-ups are vital to monitor for complications – for example, eye examinations, blood pressure checks, and, if needed, imaging of blood vessels.

Complications

If left untreated

• If left untreated, Behçet's can lead to serious complications, including permanent eye damage and blindness.
• Nervous system problems, such as stroke, meningitis, or damage to the spinal cord.
• Blood vessel problems, such as blood clots, aneurysms (bulging blood vessels), or blockages.
• Digestive system issues, such as bowel ulcers, bleeding, or holes in the intestine.
• Kidney damage in some cases.

Long-term outlook

With early diagnosis and treatment, most people with Behçet's can manage their symptoms well and lead active, full lives. The course of the disease varies from person to person – some have mild symptoms, while others have more serious involvement, especially of the eyes or nerves. Fortunately, treatments are improving, and research is ongoing. It is important to work closely with your healthcare team and to stick to your treatment plan.

Find support

International organisations

• Behçet's UK ↗
• American Behçet's Disease Association ↗

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