Dry Throat: Causes, Symptoms and Remedies

A dry throat feels scratchy, rough, tickly or sticky at the back of the mouth, and it often makes you want to keep swallowing, sipping water or clearing your throat. Most of the time the cause is simple and easy to fix: dry indoor air, breathing through the mouth at night, not drinking enough or the start of a cold. When the dryness keeps coming back, or you feel it even though you drink plenty of water, it can point to something else, such as a medicine side effect, acid reflux, sleep apnea, diabetes or Sjögren’s disease.

This guide explains why your throat feels dry, the common causes and the symptoms that go with each, the home remedies that help and the signs that mean you should see a doctor.

The lining of your mouth and throat is kept moist by saliva from the salivary glands and by a thin layer of mucus made by small glands in the nose, throat and voice box. Your nose also warms and moistens the air you breathe in before it reaches your throat. A dry throat happens when that moisture is lost faster than it is replaced, for example when you breathe dry air through your mouth, or when your body makes less saliva and mucus than usual.

A dry throat often goes together with a dry mouth, which is very common. When researchers pooled population studies, about 22% of people reported a dry mouth, and the figure was higher in studies of older people. [1]

If you drink plenty but your throat still feels dry, dehydration is probably not the main problem. A sip of water wets the throat for a few minutes, but it cannot replace saliva and mucus that your glands are not making, and it cannot stop dry air drying the throat again all night. The usual reasons are:

• Breathing through your mouth, especially during sleep, because of a blocked nose, snoring or sleep apnea.
• Dry air from heating, air conditioning or a long flight.
• A medicine that reduces saliva, such as an antihistamine, an antidepressant or a bladder medicine.
• Throat irritation from acid reflux, postnasal drip, smoking or vaping.
• A health condition that reduces saliva, such as diabetes or Sjögren’s disease.

Each of these is explained below, along with the clues that help you tell them apart.

Indoor air is often very dry in winter, when the heating is on, and in rooms with air conditioning. Airplane cabins and places at high altitude are drier still. A dry throat from dry air is usually worse in the morning and gets better after a warm shower, a hot drink or time outdoors.

Breathing through your mouth lets air bypass the nose, so it reaches the throat cold and dry. Many people breathe through the mouth at night without knowing it, often because of a nose blocked by a cold, allergies or a bent nasal septum, or by large adenoids in children. The typical sign is waking with a very dry mouth and throat that eases after a drink and breakfast.

Snoring and obstructive sleep apnea, in which the airway repeatedly narrows or closes during sleep, are closely linked to a dry throat on waking. In a study of 668 adults referred to a sleep clinic for snoring and 582 adults attending a health check, waking with a dry mouth was twice as common in people with sleep apnea (31.4%) as in people who only snored (16.4%). It rose with the severity of sleep apnea, to 40.7% in severe cases, and was reported by only 3.2% of the health check group. [2] Other signs of sleep apnea are loud snoring, pauses in breathing that a partner notices, waking up gasping, morning headaches and feeling sleepy during the day.

Dehydration reduces saliva and leaves the mouth and throat dry. It is more likely in hot weather, during exercise, with a fever, vomiting or diarrhea, and in older people, who often feel less thirsty. Other signs are thirst, dark yellow urine, passing less urine than usual, tiredness and feeling dizzy when you stand up.

A scratchy, irritated throat is often the first symptom of a cold or another upper respiratory infection. [3] A runny or blocked nose, sneezing and a cough usually follow over the next day or two, and the throat often turns from dry and scratchy to sore. Flu and COVID-19 can start the same way but more often bring a fever, aches and tiredness. A very sore throat with a fever, swollen glands in the neck and no cough is more typical of strep throat, which may need antibiotics.

Hay fever and other allergies block the nose, which makes you breathe through your mouth, and they can make mucus drip down the back of the throat (postnasal drip). The drip leads to frequent throat clearing, a tickly cough and a throat that feels both dry and coated. Antihistamine tablets, which many people take for allergies, can add to the dryness. Allergies tend to come with sneezing, itchy eyes and a clear runny nose, and they follow the season or contact with dust, pets or pollen.

Stomach contents that travel up as far as the throat and voice box can irritate them. This is called laryngopharyngeal reflux, sometimes known as silent reflux because many people with it do not have heartburn. It is linked to throat clearing, hoarseness, throat pain, a feeling of a lump in the throat, cough and extra mucus. [4]

Reflux is not always the real cause, though. A recent international consensus noted that the reflux label is often given to throat symptoms without any objective evidence of reflux. [5] Other throat problems can produce the same symptoms. [4] If your throat does not improve with reflux treatment, go back to your doctor rather than carrying on with it for months.

Many common medicines reduce saliva. In a review of 52 studies in people aged 60 and over, medicines for bladder problems, antidepressants and psycholeptics (calming medicines such as antipsychotics, anti-anxiety medicines and sleeping tablets) were significantly linked to dry mouth, and so was taking a larger number of medicines. [6] Other medicines that often dry the mouth and throat include antihistamines, decongestants, water tablets (diuretics), some blood pressure and pain medicines, and inhalers for asthma or COPD.

If your dry throat started soon after a new medicine or a change of dose, mention it to your doctor or pharmacist. Do not stop a prescribed medicine on your own, as there is often an alternative or a way to ease the dryness.

Tobacco smoke irritates and dries the lining of the mouth and throat, and smokers often have a dry cough and clear their throat a lot. Vaping can do the same, and a dry mouth and throat are common complaints among people who use e-cigarettes. Alcohol, including the alcohol in some mouthwashes, also dries the mouth. Smoking and heavy drinking are the main risk factors for throat and voice box cancer, so a lasting change in your throat or voice needs checking if you smoke or drink heavily.

Long periods of speaking, singing or shouting, especially in dry or noisy rooms, dry out the throat and strain the voice. Teachers, singers, call center workers and fitness instructors are often affected. The dryness usually comes with a hoarse or tired voice by the end of the day and improves with rest.

When you feel anxious, the body’s stress response reduces the flow of saliva, so a dry mouth and throat is a common physical symptom of anxiety and panic. Fast breathing through the mouth during anxiety adds to it, and some people also feel a lump or tightness in the throat. A dry throat from anxiety comes and goes with the anxious feelings and usually settles once you calm down.

High blood sugar pulls water out of the body through the urine, which leads to thirst and a dry mouth. A 2025 review estimated that about 42% of people with type 2 diabetes have a dry mouth, although the authors cautioned that there are few high-quality studies, so the true figure is uncertain. [7] A dry mouth together with strong thirst, passing urine often, tiredness, blurred vision or unexplained weight loss is a reason to have your blood sugar checked.

Sjögren’s disease (also called Sjögren’s syndrome) is an autoimmune condition in which the immune system attacks the glands that make saliva and tears. It causes severe dryness of the mouth and eyes and mostly affects middle-aged women. [8] Typical clues are a mouth so dry that you need water to swallow dry food such as crackers, gritty or burning eyes, frequent tooth decay, swollen glands in front of the ears, tiredness and joint pain. It is diagnosed with blood tests, a test of tear flow and sometimes a small biopsy from the inside of the lip.

Radiotherapy to the head and neck can permanently damage the salivary glands and leave the mouth and throat dry. Rarely, a dry or sore throat that does not go away, especially with hoarseness, pain on swallowing, a lump in the neck or weight loss, is a sign of throat or voice box cancer. This is why throat symptoms that last for weeks need a doctor’s check.

A dry throat can feel:

• Scratchy, rough or tickly, as if something is caught at the back of the throat.
• Sticky or tight, with a need to swallow or sip water often.
• Uncomfortable when you swallow, talk or first wake up.

It often comes with other symptoms, such as a dry mouth, thick or stringy saliva, a hoarse or tired voice, a dry tickly cough, frequent throat clearing, cracked lips, bad breath and difficulty swallowing dry food.

The symptoms that come with the dryness are the best clue to the cause:

• Dry throat on waking that eases after a drink: dry bedroom air or mouth breathing during sleep. With loud snoring or daytime sleepiness, think of sleep apnea.
• Scratchy throat followed by a runny nose and sneezing: the start of a cold.
• Throat clearing, a coated throat and itchy eyes: allergies and postnasal drip.
• Hoarseness, a lump feeling and throat clearing, with or without heartburn: possible reflux.
• Thirst and dark urine: not drinking enough.
• Dryness that started after a new medicine: a side effect.
• Strong thirst and passing urine often: possible diabetes.
• Dry mouth and dry, gritty eyes that last for months: possible Sjögren’s disease.
• Dryness with a tired, hoarse voice at the end of the day: voice overuse.

Most dry throats get better with simple measures. These are the ones that help most.

Sip water regularly rather than drinking a lot at once, and drink more in hot weather, during exercise and when you have a fever. Pale yellow urine is a good sign that you are drinking enough. Keep a glass of water by the bed if you often wake with a dry throat.

A cool mist humidifier in the bedroom helps when indoor air is dry, especially in winter. Clean it as the maker advises so that mould and bacteria do not grow in it. Breathing the steam of a warm shower also eases a dry throat for a while.

A spoonful of honey, on its own or stirred into warm water or tea, coats and soothes the throat. In a review of 14 studies, honey eased the symptoms of upper respiratory infections better than usual care, improving overall symptom scores and reducing how often and how badly people coughed. [9] Never give honey to a baby under 1 year old, because of the risk of infant botulism.

Gargling with warm salt water (about half a teaspoon of salt in a glass of warm water) can soothe a dry, scratchy throat and loosen mucus. Gargling with plain water may also help you catch fewer colds. In a Japanese trial of 387 healthy adults, those asked to gargle with water at least three times a day had about a third fewer first upper respiratory infections over the winter than those who did not gargle, while gargling with an iodine antiseptic made no significant difference. [10]

Sucking a lozenge or a hard sweet, or chewing gum, makes your mouth produce more saliva. Choose sugar-free kinds to protect your teeth, especially if you use them often.

Treating a blocked nose helps you breathe through it at night. Saline nasal sprays or rinses clear mucus and moisten the nose, and sleeping with your head slightly raised can help if a blocked nose or reflux bothers you at night. Do not use decongestant nasal sprays for more than a few days, because the blockage can come back worse.

Pharmacies sell saliva substitutes as sprays, gels and lozenges. They keep the mouth moist for longer than water and are especially useful at night and for people with a long-term dry mouth from medicines, radiotherapy or Sjögren’s disease. Toothpaste and alcohol-free mouthwash made for dry mouth also help.

Stop smoking or vaping, cut down on alcohol and avoid mouthwashes that contain alcohol. Rest your voice if you have been talking or singing a lot, and avoid shouting over noise.

If reflux may be the cause, avoid eating within about three hours of bedtime, raise the head of your bed, eat smaller meals and cut down on the foods and drinks that trigger your symptoms, such as alcohol, fatty or spicy food, coffee and fizzy drinks. Losing weight if you are overweight also reduces reflux.

If home care does not help, treatment depends on the cause.

• Infections: Most colds and throat infections are caused by viruses and settle within about a week. Acetaminophen (paracetamol) or ibuprofen eases the pain, and antibiotics are only needed for bacterial infections such as strep throat.
• Allergies: A steroid nasal spray clears a blocked nose so that you can breathe through it. Antihistamines help sneezing and itching but can dry the mouth.
• Reflux: Acid-lowering medicines called proton pump inhibitors are the usual first treatment, and H2 blockers, alginates (which form a barrier on top of the stomach contents), baclofen and lifestyle changes are other options. [4] When throat symptoms persist, occur without heartburn or regurgitation, or need stronger treatment, consensus advice is to confirm reflux with an endoscopy and reflux monitoring. [5]
• Sleep apnea: A sleep study confirms it. Treatment is usually a CPAP machine, which blows air through a mask during sleep, and a heated humidifier on the machine helps if it dries your throat.
• Medicine side effects: Your doctor may lower the dose, change the time you take it or switch you to a medicine that is less drying.
• Sjögren’s disease and other long-term dry mouth: European recommendations for Sjögren’s disease cover saliva substitutes and medicines that stimulate the salivary glands, such as pilocarpine and cevimeline. [11] Regular dental checkups matter, because a dry mouth raises the risk of tooth decay.
• Diabetes: Bringing blood sugar under control usually eases the thirst and dryness.

See a doctor if:

• Your throat stays dry or sore for more than two weeks despite home remedies.
• Your voice has been hoarse for more than three weeks.
• You have a dry mouth and dry eyes that do not go away.
• You are very thirsty and passing urine often.
• You snore loudly, stop breathing in your sleep or feel sleepy during the day.
• The dryness started after you began a new medicine.
• You notice a lump in your neck, pain on swallowing or weight loss you cannot explain.
• You smoke or drink heavily and notice a lasting change in your throat or voice.

Get medical help urgently if you have difficulty breathing, cannot swallow your saliva or are drooling, have a high fever with severe throat pain, have a muffled voice or cannot open your mouth fully, or cough up blood. Seek help quickly too for signs of severe dehydration, such as confusion or passing very little urine, especially in young children and older people.

Usually because you breathed through your mouth during the night or the bedroom air is dry. A humidifier, treating a blocked nose and a glass of water by the bed help. If you also snore loudly or feel tired during the day, ask your doctor about sleep apnea, which is strongly linked to waking with a dry mouth. [2]

It can be. A scratchy, irritated throat is often the first symptom of a cold. [3] If a runny nose, sneezing or a cough follows within a day or two, a cold is the likely cause.

Yes. Anxiety reduces the flow of saliva and makes many people breathe faster through the mouth, so a dry mouth and throat are common during anxious moments. The dryness settles as the anxiety passes.

Reflux that reaches the throat can cause irritation, throat clearing, hoarseness and a lump feeling, often without heartburn. [4] It is a possible cause when the throat feels irritated for weeks, but if treatment does not help, the diagnosis should be confirmed with tests. [5]

Sip water, suck a sugar-free lozenge, take a spoonful of honey or a warm drink, and gargle with warm salt water. Breathing the steam of a warm shower and using a humidifier at night also help. These ease the dryness quickly, but if it keeps coming back, look for the cause.

A dry throat feels scratchy, sticky or rough, and it usually gets better after a drink. A sore throat hurts, especially when you swallow, and is most often caused by an infection. A dry throat can turn into a sore throat at the start of a cold.

Rarely. Most cases come from dry air, mouth breathing, dehydration or a cold. It needs a doctor’s check when it lasts more than two weeks or comes with any of the warning signs above.

A dry throat usually means your throat is losing moisture faster than your body can replace it, most often because of dry air, mouth breathing, not drinking enough or the start of a cold. Sipping water, using a humidifier, honey, gargling, sugar-free lozenges and breathing through your nose relieve most cases. If your throat stays dry even though you drink plenty, think about medicines, snoring and sleep apnea, reflux, diabetes and Sjögren’s disease, and see a doctor if the dryness lasts more than two weeks or comes with any warning signs.

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