Sjögren’s syndrome is often described as a rare disease, but that label can be misleading. In reality, it is one of the most common autoimmune conditions in the United States, affecting far more people than many realize. Estimates suggest that up to 4 million Americans live with this condition, making it significantly less rare than the general public—and some healthcare providers—assume.
How Common Is Sjögren’s Syndrome Really?
Sjögren’s syndrome is not rare in the way most people think. Research consistently shows it is one of the most prevalent autoimmune diseases in the country. The prevalence is often compared to that of rheumatoid arthritis, which most people would not call rare.
The challenge with counting cases is that Sjögren’s is frequently underdiagnosed. Symptoms like dry eyes and dry mouth are common and often attributed to aging, medications, or allergies. Many people live with the condition for years before receiving a proper diagnosis. This means the true number of people affected may be even higher than current estimates.
Who Gets Sjögren’s Syndrome?
Sjögren’s syndrome shows a strong preference for certain groups. Women are affected far more often than men. Some clinical sources suggest that women are diagnosed at roughly nine times the rate of men. The condition can appear at any age, but it is most commonly diagnosed in people between 40 and 60 years old.
Primary Sjögren’s syndrome occurs on its own. Secondary Sjögren’s syndrome develops alongside another autoimmune disease, such as rheumatoid arthritis or lupus. When it occurs with another condition, the symptoms of Sjögren’s may be noticed first or may only be discovered during routine evaluation of the primary disease.
What Causes Sjögren’s Syndrome?
Sjögren’s syndrome is an autoimmune disorder. The immune system mistakenly attacks the glands that produce moisture, particularly the tear glands and salivary glands. This attack causes inflammation and damage, leading to the hallmark symptoms of dry eyes and dry mouth.
The exact cause is not fully understood. Genetics likely play a role, making some people more susceptible. A viral or bacterial trigger may activate the disease in someone who is genetically predisposed. No single cause has been confirmed, and it is likely that a combination of factors is involved.
The immune attack is not limited to moisture-producing glands. In some people, it can affect other parts of the body, including the joints, skin, lungs, kidneys, and nervous system. This is why Sjögren’s is considered a systemic disease, not just a condition of the eyes and mouth.
What Are the Most Common Symptoms?
The two most common symptoms are persistent dryness of the eyes and mouth. This is not ordinary dryness. People with Sjögren’s often describe a gritty or sandy feeling in their eyes that does not resolve with typical eye drops. The mouth dryness can be severe enough to interfere with speaking, chewing, and swallowing.
Other symptoms can include:
- Dry skin and dry nasal passages
- Persistent fatigue
- Joint pain and stiffness
- Swollen salivary glands
- Difficulty concentrating or brain fog
- Vaginal dryness in women
Symptoms vary widely from person to person. Some people experience only mild dryness. Others deal with severe systemic symptoms that significantly affect their quality of life. The severity of dryness does not always predict how severe the systemic symptoms will be.
Why Is Sjögren’s Syndrome Often Misdiagnosed?
Sjögren’s syndrome is frequently missed or misdiagnosed for several reasons. The early symptoms overlap with many other conditions. Dry eyes can be blamed on screen time or allergies. Dry mouth can be attributed to medications or dehydration. Fatigue is a symptom of countless health issues.
There is also no single simple test that confirms the diagnosis. Doctors typically rely on a combination of blood tests, eye examinations, and sometimes a biopsy of the salivary glands. The diagnostic process can take years, and some people are told their symptoms are not significant enough to warrant further investigation.
Another barrier is that Sjögren’s is less well known than other autoimmune diseases like lupus or multiple sclerosis. Both patients and some doctors may not consider it as a possibility. Raising awareness of the condition is a critical step toward earlier diagnosis and better management.
How Is Sjögren’s Syndrome Diagnosed?
Diagnosis requires a careful clinical evaluation. A doctor will review your symptoms and medical history. They will also look for signs of dryness and check for other autoimmune conditions.
Blood tests are commonly used to detect specific antibodies. Many people with Sjögren’s test positive for anti-SSA (Ro) or anti-SSB (La) antibodies. However, not everyone with the disease has these antibodies. Some people test negative on blood work but still have the condition based on clinical symptoms and other findings.
An eye examination by an ophthalmologist can measure tear production and assess damage to the surface of the eye. A dentist or oral medicine specialist can evaluate salivary gland function. In some cases, a minor biopsy of the lower lip is performed to check for the characteristic clusters of inflammatory cells in the salivary glands.
Because diagnosis requires expertise across multiple specialties, it is often helpful to see a rheumatologist—a doctor who specializes in autoimmune diseases. A rheumatologist can coordinate the diagnostic workup and rule out other conditions that can mimic Sjögren’s.
Is There a Cure for Sjögren’s Syndrome?
There is currently no cure for Sjögren’s syndrome. Treatment focuses on managing symptoms, reducing inflammation, and preventing complications.
For dry eyes, artificial tears and prescription eye drops that reduce inflammation are common first-line options. For dry mouth, saliva substitutes, sugar-free lozenges, and medications that stimulate saliva production can help. Staying well-hydrated and using a humidifier at night may also provide some relief.
For systemic symptoms like fatigue and joint pain, doctors may recommend medications used for other autoimmune diseases. These can include hydroxychloroquine, which is commonly used in lupus, or other immunosuppressive drugs in more severe cases. The evidence for these medications in Sjögren’s is not as strong as it is for other diseases, and treatment plans are often individualized based on symptoms and severity.
Some clinicians recommend these medications based on clinical experience and their effectiveness in similar conditions, but large clinical trials confirming their benefit specifically for Sjögren’s syndrome are limited. This is an important distinction. A treatment being commonly prescribed does not mean it is backed by the same level of evidence as treatments for other conditions.
What Complications Can Arise from Sjögren’s Syndrome?
Most people with Sjögren’s syndrome manage their symptoms without developing serious complications. However, the condition can increase the risk of certain health issues.
Chronic dry mouth significantly increases the risk of dental decay and tooth loss. Saliva plays a critical role in protecting teeth by neutralizing acids and washing away food particles. Without adequate saliva, cavities can develop quickly.
A small percentage of people with Sjögren’s develop lymphoma, a cancer of the lymphatic system. The risk is higher than in the general population, but the overall likelihood remains low. Persistent swelling of the salivary glands may be a sign of increased risk and should be evaluated by a doctor.
In some cases, Sjögren’s affects other organs. Inflammation can involve the lungs, kidneys, liver, or nerves. These complications are less common but can be serious. Regular follow-up with a rheumatologist helps monitor for these issues.
How Rare Is Sjögren’s Syndrome Less Than You Think — What Does This Mean for You?
If you have persistent dry eyes and dry mouth, you are not alone. These symptoms are common, and many people with them have not been diagnosed. Sjögren’s syndrome should be considered as a possible cause, especially if the dryness is severe, persistent, or accompanied by fatigue and joint pain.
It is also worth noting that many people with Sjögren’s have what is called “sicca symptoms”—dryness without a formal autoimmune diagnosis. This does not mean they do not have a real problem. It means the diagnostic criteria for Sjögren’s syndrome have not been fully met. Symptom management is still important in these cases.
If you suspect you may have Sjögren’s syndrome, discuss your symptoms with a primary care doctor. Ask for a referral to a rheumatologist if needed. A formal diagnosis can open the door to treatments and strategies that improve quality of life. It can also help you understand your body better and connect with a community of people who share your experience.
Frequently Asked Questions
Can Sjögren’s syndrome develop suddenly?
Sjögren’s syndrome can appear gradually or seem to start suddenly, but the underlying autoimmune process typically develops over time. A sudden onset of noticeable symptoms is often the point at which someone seeks medical help, even if the disease process has been active for a while.
Is Sjögren’s syndrome a disability?
Sjögren’s syndrome can be disabling for some people when symptoms are severe and affect daily functioning or the ability to work. Whether it qualifies as a disability depends on the severity of your symptoms and how they impact your specific situation.
Can men get Sjögren’s syndrome?
Yes, men can get Sjögren’s syndrome, though it is much less common in men than in women. Men who develop the condition may experience similar symptoms and face the same challenges with diagnosis and management.
Does Sjögren’s syndrome affect life expectancy?
For most people, Sjögren’s syndrome does not significantly shorten life expectancy. The primary risks to long-term health come from the small increased risk of lymphoma and the potential for organ involvement in a minority of cases.
