In short
Dry eyes and dry mouth are usually caused by medicines, screens, air conditioning or age. Sjogren's syndrome is the diagnosis when the immune system attacks the glands that make tears and saliva, and it is worth confirming properly.
Reviewed by Dr. Ashish Baweja, DM Clinical Immunology & Rheumatology, AIIMS Rishikesh · last updated October 2026
Dry eyes and dry mouth are common, and most of the time they are not autoimmune. Medicines, air conditioning, screens, dehydration and age account for the large majority of cases. Sjogren's syndrome is the diagnosis when the dryness is caused by the immune system attacking the glands that make tears and saliva.
What raises suspicion is persistence and company. Dryness that has lasted months rather than weeks, that is bad enough to change what you can eat or how long you can read, and that arrives alongside fatigue and aching joints.
It is worth pinning down, because dryness left alone damages teeth and the surface of the eye, and because this condition sometimes brings other problems that are far easier to manage when somebody is expecting them.
What dry eyes and dry mouth feel like day to day
This is not a mild inconvenience when the glands are genuinely affected. Eyes may burn or itch or feel as though they have sand in them, and the dryness can blur vision or cause sensitivity to bright light, along with irritated, itchy eyelids from the inflammation (NIAMS).
Gritty eyes is the phrase people reach for most often: the sensation of a grain of sand that will not wash out, worse by evening and worse in a car with the air conditioning on (American College of Rheumatology).
The mouth may feel chalky, with trouble swallowing, speaking and tasting, and because the protective effect of saliva is lost, more dental decay follows (NIAMS).
Most people notice it through small things first. Needing water to get a roti or a dry biscuit down. Waking at night to sip. Food sticking to the teeth. Being unable to talk through a long meeting without a bottle at hand.
The common causes that are not autoimmune
The NHS is clear that other conditions can cause similar symptoms, and that the commoner causes are checked first (NHS). This is not a brush-off. If a tablet is drying your mouth, that is a solvable problem.
Medicines are the biggest single group. Antihistamines, several blood pressure medicines, antidepressants, bladder medicines and diuretics all reduce saliva. So do some of the tablets people buy without a prescription.
Other dry mouth causes include mouth breathing and snoring, a blocked nose, smoking and tobacco or paan use, poorly controlled diabetes, anxiety, radiotherapy to the head and neck, and simply not drinking enough in a Gurugram summer.
Dry eyes have their own list. Hours of screen work reduces blinking. Air conditioning, fans and dusty wind strip the tear film. Contact lenses, blepharitis, previous laser eye surgery and hormonal change around menopause all contribute.
Bring every medicine and supplement you take to the appointment, including the ones you buy yourself. Do not stop any of them on your own.
Ordinary causes and autoimmune disease can also sit together in the same person. A tablet being part of the problem does not close the question, it just removes one layer of it.
What Sjogren's syndrome actually is
It is a chronic autoimmune disease in which the immune system attacks the glands that make moisture in the eyes, mouth and other parts of the body, and it can also affect the joints, lungs, kidneys, blood vessels, digestive organs and nerves (MedlinePlus).
The NHS describes it as a condition where the glands that produce fluid, such as tears and saliva, stop working properly, with flare-ups when symptoms are worse and quieter periods in between (NHS).
It affects women about ten times more often than men and usually begins between the ages of 45 and 55, and it can occur alone or with another autoimmune condition (American College of Rheumatology).
The reason the combination matters is that isolated dryness of one site has many explanations, while dry eyes and dry mouth together, lasting months, with reduced tear and saliva production that can actually be measured, narrows things considerably. Sjogren's syndrome is one of the conditions a rheumatologist is specifically trained to confirm or rule out.
The symptoms beyond the eyes and the mouth
Aching muscles and joints and extreme tiredness sit alongside the dryness as common features (NHS).
Beyond that, Sjogren's syndrome symptoms can include dry skin, dry nasal passages and throat with a persistent dry cough, skin rashes, acid reflux, vaginal dryness, disturbed sleep and swelling of the glands around the face and neck (NIAMS).
Salivary gland swelling in the cheeks or under the jaw deserves a mention at the appointment even if it has settled, because it comes and goes and is easily dismissed as a blocked duct.
Dryness elsewhere is common and under-reported. A nose that crusts and bleeds, a throat that makes long conversations hard work, skin that no amount of moisturiser seems to settle.
Fatigue is often the symptom that costs people the most and gets the least attention in the consultation. Raise it deliberately rather than waiting to be asked.
How the dryness is measured and tested
The NHS lists the tests used: blood tests, eye tests, a test where you spit or dribble into a container for five minutes to see how much saliva you produce, an X-ray of the salivary glands to check whether they are blocked, and a lip biopsy in which a small piece of tissue containing salivary glands is taken from the lip and examined under a microscope. An ultrasound scan or urine test is sometimes added (NHS).
The eye assessment is done by an eye specialist and covers two separate things: how much tear fluid you make, and how healthy the surface of the eye is. That second part matters, because some people produce enough tears of poor quality and still have a damaged eye surface.
The saliva measurement is unglamorous and genuinely useful. It turns a subjective complaint into a number that can be compared later.
Two practical points for the eye appointment: go without contact lenses in, and say which drops you have used that morning, because both change what the tests show.
The lip biopsy is a small procedure under local anaesthetic, and it is the test that most often settles a case that the blood tests have left open. What a minor salivary gland biopsy involves sets out what to expect on the day.
What the antibodies do and do not prove
The blood tests look for particular antibodies, principally anti-Ro antibodies, sometimes written as SSA, and anti-La or SSB, alongside ANA, rheumatoid factor, inflammation markers and immunoglobulin levels.
A positive ANA on its own is not a diagnosis of anything. It is found in plenty of perfectly healthy people, which is explained in what a positive ANA actually means.
Anti-Ro antibodies are more specific, but they are not present in everyone with the condition and they also occur in lupus. A negative antibody result does not exclude the diagnosis, and that is precisely when the eye tests, the saliva measurement and the biopsy carry the weight. How rheumatology blood tests fit together covers the rest of the panel.
One reason to have this settled before pregnancy. Anti-Ro antibodies can affect the baby's heart rhythm, so they are checked in advance and the pregnancy is monitored more closely when they are present. If you are planning a pregnancy, say so early rather than at the first scan.
When Sjogren's comes with another autoimmune disease
It can occur by itself or with other autoimmune conditions such as rheumatoid arthritis or lupus (American College of Rheumatology). Dry eyes are also a recognised feature of rheumatoid arthritis in their own right.
Where fingers change colour in the cold, or there is a rash, breathlessness or difficulty swallowing alongside the dryness, the assessment widens into the broader group of connective tissue diseases.
Mouth ulcers are a separate problem that often gets folded into the same complaint. A dry mouth is uncomfortable all the time; ulcers are discrete painful sores that come and go, and they point in a different direction, as set out in mouth ulcers that keep coming back.
Protecting your teeth is part of the treatment
Saliva protects teeth, so a very dry mouth brings difficulty swallowing, tooth decay and gum disease (NHS). Dental care stops being routine maintenance and becomes part of the treatment plan.
The NHS advice is specific: drink plenty of water, brush two or three times a day with fluoride toothpaste, chew sugar-free gum, and have dental check-ups every six months. It also advises cutting down on sugary, salty and acidic food and drink, including citrus and fizzy drinks.
For the eyes, the same page advises sunglasses with enclosed sides outdoors, a humidifier indoors, regular eye checks, and avoiding long unbroken stretches of reading or screen work. Not smoking and staying out of smoky, dusty, windy and heavily air-conditioned environments help more than people expect.
Treatments range from eye drops, mouth gels and mouthwashes available from a pharmacist, through prescribed medicines that keep the eyes and mouth wet or prompt the glands to produce more fluid, to medicines that damp down the immune attack itself where that is needed.
The complications worth knowing about
Having this condition makes some other problems more likely: sores on the eye surface or inflamed eyelids, other immune conditions, digestive problems such as irritable bowel syndrome, loss of feeling in the arms and legs from peripheral neuropathy, depression, and rarely lymphoma, a cancer of the lymph glands (NHS).
Rarely is the operative word, and the useful response is reporting rather than worrying. Firm, one-sided swelling of a salivary gland that persists and does not settle should be examined rather than watched.
The NHS also notes that most people with the condition live into old age with the same life expectancy as the general population. There is no cure, but the symptoms are manageable and much of the damage dryness would otherwise cause is preventable.
What to do next and what to bring
Dry eyes and dry mouth that have lasted three months or more, that change what you eat or how long you can read, and that come with fatigue or joint pain, deserve an assessment rather than another bottle of drops.
What to take with you:
- Every medicine and supplement you take, in the original packs
- How long the dryness has lasted and what it now stops you doing
- Dental work done in the last two years, and your dentist's notes if you have them
- Photographs of any facial or jaw swelling, taken while it is present
- Previous blood reports, including any ANA or antibody results
Some symptoms should not wait. Sudden loss of vision, a painful red eye, a hard lump in the neck or jaw that is growing, new numbness or weakness in the limbs, or new breathlessness all need urgent assessment on the day.
This is a condition where care is shared. A rheumatologist in Gurugram will usually work alongside an eye specialist and a dentist, so bring their reports if you already have them. What happens at a first rheumatology visit explains how the appointment itself is structured.
Common questions
Does a dry mouth always mean Sjogren's syndrome?
No, and usually it does not. Medicines are the commonest cause, followed by mouth breathing, smoking, dehydration and diabetes. Autoimmune dryness is suspected when both the eyes and the mouth have been dry for months, when tear and saliva production are measurably reduced, and when fatigue or joint pain accompany it.
Can I have Sjogren's syndrome with negative antibody tests?
Yes. Not everyone with the condition carries anti-Ro or anti-La antibodies, so a negative result does not rule it out. When antibodies are negative but symptoms persist, the eye surface tests, the measured saliva flow and a lip gland biopsy usually carry the diagnosis instead.
Why would I need a biopsy from my lip?
Because tiny salivary glands sit just inside the lower lip and can be sampled easily under local anaesthetic. Looking at them under a microscope shows whether immune cells have gathered in the gland tissue. It is offered when blood tests and eye tests have left the diagnosis genuinely unresolved.
Are artificial tears enough for dry eyes in Sjogren's?
For some people they are, used regularly rather than only when the eyes hurt. Others need prescribed drops or treatment aimed at the inflammation, and regular checks of the eye surface. An eye specialist should assess the surface itself, because comfort and damage do not always go together.
Sources
- NHS - Sjogren's syndrome www.nhs.uk
- NIAMS - Sjogren's disease: symptoms and causes www.niams.nih.gov
- American College of Rheumatology - Sjogren's disease rheumatology.org
- MedlinePlus - Sjogren's syndrome medlineplus.gov
This article is general information and does not replace a consultation.