What is Behcet's Disease?
Behcet’s disease is a rare but serious condition where the body’s immune system starts attacking its own blood vessels, causing inflammation in several parts of the body at the same time. It can affect the eyes, the mouth, the skin, and the joints, often showing up as repeated sores or flare-ups that come and go over many years.
Understanding Behcet’s Disease
Behcet’s Disease is a condition often called the “Silk Road disease” because it is most commonly seen in countries along the ancient Silk Road trading route, stretching from the Middle East through central Asia to the Far East.
Behcet’s disease is what doctors call an autoimmune condition, meaning the immune system, which is supposed to protect the body from infections, begins attacking the body’s own healthy tissue instead. In behcet’s disease, this attack targets the walls of blood vessels throughout the body, causing inflammation, ulcers, and pain in multiple areas simultaneously.
What makes behcet’s disease difficult to identify is that it does not follow a predictable pattern. Symptoms come and go, appearing as “flares” and then settling down for a while before returning. Different people are affected in different ways. One person may have mainly mouth and skin problems, while another may have severe eye involvement that threatens their sight.
Because no single test confirms behcet’s disease, and because its symptoms overlap with many other conditions, the average time from when symptoms first appear to when a correct diagnosis is reached can stretch over several years. This is why awareness of the condition matters so much.
What are the Behcet’s Disease Symptoms?
The behcet’s disease symptoms are varied and affect different parts of the body. One of the key features of behcet’s disease symptoms is that they tend to come and go rather than being constant. A person may have a flare of symptoms lasting days to weeks, followed by a period where things settle down, only for another flare to return weeks or months later.
The behcet’s disease symptoms that a person experiences depend on which organs or systems are involved. Not everyone gets all symptoms, and the severity varies quite significantly from person to person.
Eyes – Eye involvement is one of the most serious aspects of behcet’s disease. Uveitis, which is inflammation inside the eye, is the most common eye-related problem. This causes redness, pain, blurred vision, light sensitivity, and watering. If eye inflammation is not treated promptly and properly, it can lead to permanent vision damage or even blindness. This is why regular review by an ophthalmologist is essential for anyone with behcet’s disease.
Behcet’s Disease Symptoms at a Glance
Area | What happens |
Mouth | Recurring painful sores, often the first sign |
Eyes | Redness, blurred vision, light sensitivity, risk of vision loss |
Skin | Acne-like spots, nodules on the legs, skin ulcers |
Genitals | Painful sores that heal and leave scars |
Joints | Swelling and pain in knees, ankles, wrists |
Blood vessels | Vein inflammation, risk of clots |
Brain | Headaches, confusion, rarely stroke |
Gut | Abdominal pain, diarrhoea, bleeding |
Are There Different Types of Behcet’s Disease?
Behcet’s disease is not divided into formally named subtypes in the way some other conditions are. However, doctors do describe the condition based on which parts of the body are primarily affected, because this determines the kind of specialists involved and the approach to behcet’s disease treatment.
Main Patterns of Involvement
Pattern | What it means | Who manages it |
Mucocutaneous | Mainly mouth sores, genital sores, and skin problems | Dermatologist, oral medicine specialist |
Ocular (eye) | Uveitis and other eye inflammation, risk to vision | Ophthalmologist – an essential behcet’s disease specialist |
Articular (joints) | Recurring joint swelling and pain | Rheumatologist |
Neurological | Brain and nervous system involvement, headaches, confusion | Neurologist |
Vascular | Blood vessel inflammation, clots, aneurysm risk | Vascular specialist, rheumatologist |
Many patients have more than one pattern of involvement, which is why behcet’s disease is managed by a team of specialists working together rather than a single doctor.
What Causes Behcet’s Disease?
The exact cause of behcet’s disease is not fully understood yet. What researchers do know is that it involves the immune system attacking the body’s own blood vessels, but what triggers this in the first place is likely a combination of genetic and environmental factors working together.
What Do We Know About the Causes?
Genetic factors Behcet’s disease has a strong genetic link. A gene called HLA-B51 is found more often in people with behcet’s disease, particularly in those from countries along the Silk Road. Having this gene does not mean a person will definitely develop the condition, but it does increase the likelihood. If a family member has behcet’s disease, other members of the family may have a higher chance of developing it too.
Environmental triggers Researchers believe that certain environmental factors, such as a bacterial or viral infection, may act as a trigger in people who are genetically predisposed. The immune system, after being activated by the infection, may continue attacking the body’s own tissues even after the infection has gone.
Immune system overreaction At the heart of behcet’s disease is an overactive immune response. The immune system produces excess inflammation in the blood vessel walls, causing damage. This is not an infection or a cancer, it is the body’s own defence system working against itself.
Geographic and ethnic factors The condition is significantly more common in people of Middle Eastern, central Asian, Turkish, Korean, and Japanese descent. It is less commonly seen in people of Northern European or sub-Saharan African backgrounds. In India, cases are reported but the condition is often underdiagnosed because awareness among both patients and some doctors remains limited.
Risk Factors
- Family history of behcet’s disease
- Genetic background (HLA-B51 positive)
- Age between 20 and 40 years at onset
- Male sex (men tend to have more severe disease, particularly eye and vascular involvement, though women are equally affected in number)
- Living in or coming from a region along the historic Silk Road
How is Behcet’s Disease Diagnosed?
Behcet’s disease diagnosis is one of the more challenging aspects of this condition. There is no single blood test or scan that confirms it. Behcet’s disease diagnosis is made clinically, meaning it is based on the pattern of symptoms, the history of recurrence, and after ruling out other conditions that can look similar.
Because behcet’s disease diagnosis relies on recognising a pattern over time, patients often see multiple doctors across different specialties before the pieces come together. This is why a behcet’s disease specialist, or ideally a team of specialists, plays such an important role.
The International criteria for Behcet’s Disease Diagnosis
The most widely used set of criteria for behcet’s disease diagnosis requires:
Recurring mouth sores (mandatory) – at least three episodes in one year
Plus two or more of the following:
- Recurring genital sores
- Eye inflammation (uveitis or retinal vasculitis confirmed by an eye specialist)
- characteristic skin lesions (acneiform lesions, erythema nodosum)
- A positive pathergy test
These criteria help a Behcet’s disease specialist confirm the diagnosis when the full clinical picture is present.
Tests Used to Support Behcet’s Disease Diagnosis
Test | What it checks |
Eye examination by ophthalmologist | Identifies uveitis, retinal inflammation, or other eye changes |
Skin pathergy test | A small skin prick is made and checked after 48 hours for a reaction |
Blood tests | checks inflammatory markers (ESR, cRP), rules out other autoimmune conditions; HLA-B51 testing may be done |
MRI of the brain | Used when neurological symptoms are present |
Colonoscopy | If gut involvement is suspected |
Angiography | For assessing blood vessel involvement |
Behcet’s disease diagnosis in India is made at specialist centres with experience in rare autoimmune conditions. An ophthalmologist, a rheumatologist, and a dermatologist are usually the core team involved in reaching and confirming the diagnosis.
What Does Behcet’s Disease Treatment Look Like?
There is currently no cure for Behcet’s disease. Behcet’s disease treatment focuses on managing the symptoms, reducing inflammation during flare-ups, and preventing serious complications, especially vision loss and blood vessel damage.
Behcet’s disease treatment is always personalized. The medicines and approach used depend on which organs are affected, how severe the inflammation is, and how the individual responds over time. Because behcet’s disease treatment involves managing a condition that comes and goes over many years, long-term follow-up with a behcet’s disease specialist team is essential.
Behcet’s Disease Treatment Options
- Corticosteroids (Steroid Medicines) : Reducing acute inflammation Steroid medicines are used to bring down inflammation quickly during a flare. They can be given as eye drops for eye inflammation, as creams or gels for mouth and skin sores, or as tablets for more widespread disease. Steroid eye drops are often an early step in Behcet’s disease treatment for patients with uveitis. Long-term use of oral steroids requires careful monitoring because of side effects such as raised blood pressure, blood sugar, and bone thinning.
- Colchicine : For skin and joint symptoms colchicine is an anti-inflammatory medicine that is particularly helpful for managing mouth sores, genital ulcers, skin nodules, and joint pain in behcet’s disease. It is taken as a tablet and is generally well tolerated for long-term use.
- 03 – Immunosuppressants: Slowing down the immune system When the condition is more severe, or when steroids alone are not keeping the inflammation under control, immunosuppressant medicines are added to the behcet’s disease treatment plan. commonly used options include:
- Azathioprine: often used to protect the eyes and reduce the frequency of flares
- ciclosporin: used specifically for eye inflammation when there is a risk to vision
- Methotrexate: used for joint and skin involvement
These medicines suppress the immune system to reduce the overactive inflammatory response at the root of behcet’s disease. Regular blood test monitoring is needed when taking these medicines.
- Biological Therapies: For severe or treatment-resistant disease Biological therapies are a newer group of medicines that target specific parts of the immune response with more precision. TNF inhibitors such as infliximab and adalimumab have shown significant benefit in Behcet’s disease treatment, particularly for eye inflammation, gut involvement, and cases where other medicines have not worked well. These are administered as injections or infusions, usually at a hospital or clinic.
Biological therapies are typically reserved for patients with severe disease or those who have not responded to other treatments, and they require close monitoring by a Behcet’s disease specialist.
- Treating Eye Involvement Specifically: Protecting vision Eye care is one of the most urgent aspects of behcet’s disease treatment. Uveitis in Behcet’s disease can be aggressive and recurrent, and without prompt treatment, each episode of inflammation can cause cumulative damage to the retina and other eye structures, eventually resulting in vision loss.
Behcet’s disease treatment for eye involvement may include:
- Steroid eye drops for mild anterior uveitis
- Steroid injections around or inside the eye for more significant inflammation
- Systemic immunosuppressants (azathioprine, ciclosporin) to prevent recurrence
- Biological therapies (infliximab, adalimumab) for severe or recurring eye disease
The eye specialist, as a key Behcet’s disease specialist in the care team, will monitor the eye during every visit for signs of new or recurring inflammation.
- Treating Mouth and Skin Sores: Managing day-to-day quality of life Topical corticosteroid gels, mouthwashes, and creams are used for mouth and genital ulcers. Pain relief gels help with immediate comfort. For more frequent or severe ulcers, colchicine or thalidomide (under careful supervision) may be added to the Behcet’s disease treatment plan.
- Managing Vascular and Neurological Involvement: Specialist referral Blood vessel and brain involvement require involvement from additional specialists. Anticoagulation (blood thinning) medicines may be used for vein clots. Immunosuppressants and biological therapies are used for arterial involvement and neurological behcet’s disease. These aspects of behcet’s disease treatment are managed primarily by vascular surgeons and neurologists within the multi-specialty team.
Behcet’s Disease Treatment Overview
Symptom area | Treatment used |
Mouth and genital ulcers | Steroid gels, colchicine, thalidomide (selected cases) |
Eye inflammation (uveitis) | Steroid drops/injections, azathioprine, ciclosporin, infliximab |
Skin nodules and acne-like spots | colchicine, topical steroids, dapsone |
Joint pain and swelling | NSAIDs, colchicine, azathioprine |
Blood vessel involvement | Immunosuppressants, anticoagulants, biologics |
Neurological involvement | High-dose steroids, immunosuppressants, biologics |
Severe or resistant disease | Infliximab, adalimumab, other biological therapies |
Why the Eyes are So Central to Behcet's Disease Care
Among all the organs that Behcet’s disease can affect, the eyes carry the highest risk of permanent, irreversible damage if the condition is not recognised and treated in time.
The most common eye problem in Behcet’s disease is uveitis, which is inflammation of the uvea, the middle layer of the eye containing the iris, ciliary body, and choroid. In Behcet’s disease, this inflammation tends to affect both eyes and can involve the back of the eye (the retina and the blood vessels supplying it), which is the part responsible for detailed central vision.
Each episode of uveitis causes some degree of damage to the delicate structures inside the eye. Repeated episodes, particularly when not fully controlled, add up over time and can cause:
- cataract (clouding of the lens from repeated inflammation or steroid use)
- Glaucoma (raised eye pressure)
- Damage to the retina and its blood vessels
- Optic nerve damage
- Vision loss, which can be permanent in severe cases
This is why the ophthalmologist is one of the most important members of the behcet’s disease specialist team. Regular eye examinations, even when the eyes feel fine, are a non-negotiable part of managing Behcet’s disease. Early detection of inflammation, before it causes symptoms, allows for earlier treatment and better protection of vision.
Behcet’s Disease in India: What Patients Should Know
Behcet’s disease is not as widely known among patients or even general practitioners in India as it is in countries where it is more prevalent. This leads to several challenges:
Delayed diagnosis: Because the symptoms, particularly mouth sores, are very common and are usually attributed to other causes (stress, vitamin deficiencies, infections), Behcet’s disease is often not considered for many years.
Multiple doctor visits: Patients often see a dentist for mouth sores, a skin specialist for skin problems, and an eye doctor for redness, without anyone connecting the dots to a single underlying diagnosis.
Underreporting: The true prevalence of behcet’s disease in India is not fully known because many cases go undiagnosed or are attributed to other conditions.
If you or someone you know has been experiencing recurring mouth sores alongside eye problems, skin issues, or joint pain, and no clear explanation has been found, it is worth asking a doctor specifically about behcet’s disease. Seeking a behcet’s disease specialist, ideally a rheumatologist with experience in rare autoimmune conditions, is the right next step.
Living with Behcet’s Disease: Practical Guidance
Managing flare-ups at home:
- Keep a simple diary of when symptoms appear, how long they last, and what seems to trigger them. This helps the behcet’s disease specialist team spot patterns and adjust treatment.
- For mouth sores, a soft-bristled toothbrush and gentle mouthwash can reduce irritation. Avoid biting or pressing on sores as this slows healing.
- For joint pain during flares, rest, gentle movement, and warm compresses can help alongside any prescribed medicines.
- Avoid smoking. Smoking worsens vascular inflammation and adds to the burden on blood vessels already affected by behcet’s disease.
At work and school: During flares, fatigue and pain can make daily tasks harder. Communicating with your employer or school about the condition and having a medical certificate from your behcet’s disease specialist can help in accessing accommodations or medical leave when needed.
Mental health: Living with a chronic condition that flares unpredictably takes a psychological toll. If you feel anxious, low, or overwhelmed by the diagnosis, please mention this to your doctor. counselling and support groups are available and can make a real difference to how manageable daily life feels.
Behcet’s Disease care at Vasan Eye care
While behcet’s disease is a systemic condition requiring input from multiple specialists, eye care sits at the heart of managing it well. Vasan Eye care’s ophthalmologists work as part of multi-specialty care pathways for patients with behcet’s disease, providing:
- Detailed eye examinations to identify and monitor uveitis
- Prompt treatment of eye inflammation to protect vision
- coordination with rheumatologists and other specialists involved in the overall care plan
- Long-term monitoring to catch recurrence of eye inflammation early
- Honest guidance on the outlook for vision and what can be done to protect it
Our 150+ centres across India mean that patients in South India and beyond can access eye care for behcet’s disease without long travel. Our team of 500+ eye care specialists is part of ASG Enterprises, India’s largest eye care network, bringing the depth of experience needed to manage complex conditions like Behcet’s disease with care and confidence.
RELATED EYE CONDITIONS
- Uveitis
- Retinal Vasculitis
- Glaucoma
- cataract
- Dry Eye Syndrome
REFERENCES
- cleveland clinic. Behcet’s Disease: Symptoms, Treatments, causes and Diagnosis. Last reviewed 2020. my.clevelandclinic.org/health/diseases/12980-behcets-disease https://my.clevelandclinic.org/health/diseases/12980-behcets-disease
- Kone-Paut I, Barete S, et al. Behcet’s Disease. StatPearls, National Library of Medicine. Updated 2023. ncbi.nlm.nih.gov/books/NBK470257 https://www.ncbi.nlm.nih.gov/books/NBK470257/
- NHS. Behcet’s Disease: Treatment. Last reviewed 2023. nhs.uk/conditions/behcets-disease/treatment https://www.nhs.uk/conditions/behcets-disease/treatment/
- Yazici H, Yazici Y. Behcet Syndrome: An Update for clinicians. Medicina (MDPI). 2024;60(4):562. mdpi.com/1648-9144/60/4/562 https://www.mdpi.com/1648-9144/60/4/562
- Greco A, et al. Behcet’s syndrome: pathogenesis, clinical features and treatment. Frontiers in Medicine. 2021. frontiersin.org/journals/medicine/articles/10.3389/fmed.2021.624795/full https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2021.624795/full
For appointments, call 1800 571 2222 or visit your nearest Vasan Eye care centre.
Frequently Asked Questions (FAQs)
Yes, many people with behcet’s disease lead full and active lives with the right medical care in place. The key is getting an accurate diagnosis, working with the right behcet’s disease specialist team, and sticking to the treatment plan consistently. Because the condition comes and goes in flares, there will be periods where things feel quite manageable and periods where active treatment is needed. With good control of inflammation, particularly protecting the eyes and blood vessels from damage, most patients can manage their condition alongside work, family life, and daily activities.
There is no universally agreed dietary restriction for behcet’s disease. However, some general principles can help. Foods that are hard and abrasive, like crusty bread, hard biscuits, or certain raw vegetables, can aggravate existing mouth sores and make eating more painful. Very spicy or acidic foods may also irritate ulcers. Some patients find that a diet that supports overall immune health, rich in fruits, vegetables, and whole grains and low in processed foods, helps them feel better in general. If you are taking certain medications such as methotrexate or ciclosporin, your doctor may have specific dietary guidance, such as limiting alcohol or avoiding grapefruit. Always check with your Behcet’s disease specialist before making significant dietary changes.
The seriousness of Behcet’s disease varies considerably. For some people, the condition is largely limited to uncomfortable but manageable mouth sores and skin problems. For others, particularly those with significant eye, vascular, or neurological involvement, it can be a life-altering and potentially life-threatening condition. Eye involvement is a particularly serious concern in India and in South Asian populations, as repeated or untreated uveitis can lead to permanent vision loss. Vascular complications such as large vessel aneurysms, and neurological complications, are the most dangerous aspects of Behcet’s disease. This is why early diagnosis and regular monitoring by a behcet’s disease specialist team matters greatly.
Swollen lymph nodes are not a classic or defining feature of Behcet’s disease. However, during active flares when the immune system is highly active, some patients do notice mild lymph node swelling. If swollen lymph nodes are prominent or persistent, the doctor will investigate to rule out other conditions, as several other autoimmune and infectious conditions can cause lymph node enlargement alongside similar symptoms. Swollen lymph nodes should always be mentioned to the treating behcet’s disease specialist so they can be properly assessed.
It has a genetic component rather than being directly hereditary in a straightforward way. The HLA-B51 gene is associated with an increased risk of developing Behcet’s disease, and this gene can be passed down in families. However, having the gene does not mean a person will definitely develop the condition, and not everyone with behcet’s disease carries the gene. If a close family member has been diagnosed, it is worth mentioning this to a doctor, particularly if you develop recurring mouth sores or eye inflammation.
Yes, though it is less common in children than in adults. When it does occur in childhood, it is sometimes called juvenile behcet’s disease. The symptoms are broadly similar to those seen in adults, including mouth sores, eye inflammation, and skin involvement. Behcet’s disease diagnosis in children requires the involvement of a paediatric rheumatologist alongside the relevant specialist team. Eye involvement in children with behcet’s disease should be monitored closely, as uncontrolled uveitis during childhood can affect visual development.
This depends on how the condition is behaving and which organs are affected. During active disease or when starting new medication, you may need to see your behcet’s disease specialist team more frequently, sometimes monthly. During stable periods, three to six monthly reviews are typical. Eye examinations should happen regularly regardless of whether eye symptoms are currently active, because inflammation can sometimes be present without obvious symptoms in its early stages. Your Behcet’s disease specialist will advise on the review schedule suited to your situation.
Both are autoimmune conditions where the immune system causes widespread inflammation, and they can look similar on the surface. However, they differ in several important ways. Behcet’s disease is characterised by its classic triad of recurring mouth sores, genital sores, and eye inflammation, along with a positive pathergy test, and is strongly associated with the HLA-B51 gene. Lupus is more commonly associated with a butterfly-shaped facial rash, joint pain, kidney involvement, and specific antibodies (ANA, anti-dsDNA). A behcet’s disease specialist or rheumatologist can distinguish between the two through a combination of clinical assessment and blood tests.
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Why the Eyes are So Central to Behcet’s Disease Care
Among all the organs that Behcet’s disease can affect, the eyes carry the highest risk of permanent, irreversible damage if the condition is not recognised and treated in time.
The most common eye problem in Behcet’s disease is uveitis, which is inflammation of the uvea, the middle layer of the eye containing the iris, ciliary body, and choroid. In Behcet’s disease, this inflammation tends to affect both eyes and can involve the back of the eye (the retina and the blood vessels supplying it), which is the part responsible for detailed central vision.
Each episode of uveitis causes some degree of damage to the delicate structures inside the eye. Repeated episodes, particularly when not fully controlled, add up over time and can cause:
- cataract (clouding of the lens from repeated inflammation or steroid use)
- Glaucoma (raised eye pressure)
- Damage to the retina and its blood vessels
- Optic nerve damage
- Vision loss, which can be permanent in severe cases
This is why the ophthalmologist is one of the most important members of the behcet’s disease specialist team. Regular eye examinations, even when the eyes feel fine, are a non-negotiable part of managing Behcet’s disease. Early detection of inflammation, before it causes symptoms, allows for earlier treatment and better protection of vision.
Behcet’s Disease in India: What Patients Should Know
Behcet’s disease is not as widely known among patients or even general practitioners in India as it is in countries where it is more prevalent. This leads to several challenges:
Delayed diagnosis: Because the symptoms, particularly mouth sores, are very common and are usually attributed to other causes (stress, vitamin deficiencies, infections), Behcet’s disease is often not considered for many years.
Multiple doctor visits: Patients often see a dentist for mouth sores, a skin specialist for skin problems, and an eye doctor for redness, without anyone connecting the dots to a single underlying diagnosis.
Underreporting: The true prevalence of behcet’s disease in India is not fully known because many cases go undiagnosed or are attributed to other conditions.
If you or someone you know has been experiencing recurring mouth sores alongside eye problems, skin issues, or joint pain, and no clear explanation has been found, it is worth asking a doctor specifically about behcet’s disease. Seeking a behcet’s disease specialist, ideally a rheumatologist with experience in rare autoimmune conditions, is the right next step.
Living with Behcet’s Disease: Practical Guidance
Managing flare-ups at home:
- Keep a simple diary of when symptoms appear, how long they last, and what seems to trigger them. This helps the behcet’s disease specialist team spot patterns and adjust treatment.
- For mouth sores, a soft-bristled toothbrush and gentle mouthwash can reduce irritation. Avoid biting or pressing on sores as this slows healing.
- For joint pain during flares, rest, gentle movement, and warm compresses can help alongside any prescribed medicines.
- Avoid smoking. Smoking worsens vascular inflammation and adds to the burden on blood vessels already affected by behcet’s disease.
At work and school: During flares, fatigue and pain can make daily tasks harder. Communicating with your employer or school about the condition and having a medical certificate from your behcet’s disease specialist can help in accessing accommodations or medical leave when needed.
Mental health: Living with a chronic condition that flares unpredictably takes a psychological toll. If you feel anxious, low, or overwhelmed by the diagnosis, please mention this to your doctor. counselling and support groups are available and can make a real difference to how manageable daily life feels.
Behcet’s Disease care at Vasan Eye care
While behcet’s disease is a systemic condition requiring input from multiple specialists, eye care sits at the heart of managing it well. Vasan Eye care’s ophthalmologists work as part of multi-specialty care pathways for patients with behcet’s disease, providing:
- Detailed eye examinations to identify and monitor uveitis
- Prompt treatment of eye inflammation to protect vision
- coordination with rheumatologists and other specialists involved in the overall care plan
- Long-term monitoring to catch recurrence of eye inflammation early
- Honest guidance on the outlook for vision and what can be done to protect it
Our 150+ centres across India mean that patients in South India and beyond can access eye care for behcet’s disease without long travel. Our team of 500+ eye care specialists is part of ASG Enterprises, India’s largest eye care network, bringing the depth of experience needed to manage complex conditions like Behcet’s disease with care and confidence.
