A burning sensation in your throat usually comes from one of a handful of common causes: acid reflux, a viral infection, postnasal drip, or direct irritation from something you swallowed or inhaled. Most cases resolve on their own within a week, but persistent burning that lasts longer often points to a treatable underlying condition.
Acid Reflux and Silent Reflux
Acid reflux is one of the most common reasons for a burning throat, and it doesn’t always come with the classic heartburn you’d expect. A condition called laryngopharyngeal reflux (LPR), sometimes known as “silent reflux,” sends small amounts of stomach acid and digestive enzymes up into the throat without producing obvious chest discomfort. Your throat lining is far more sensitive than your esophagus. It lacks the same protective coating and doesn’t have the same mechanisms to wash acid away, so even a small amount of reflux can linger and cause damage.
The burning from LPR often shows up alongside other symptoms that seem unrelated to reflux: a chronic cough, hoarseness, excessive mucus, a feeling of something stuck in your throat, or frequent throat clearing. Stomach acid also interferes with the normal processes that clear mucus and infections from your throat and sinuses, which is why people with untreated reflux sometimes get frequent upper respiratory infections or worsening asthma. If your throat burns mostly after meals, when lying down, or first thing in the morning, reflux is a strong possibility.
Over-the-counter acid reducers can help confirm whether reflux is behind your symptoms. A two-week trial of a proton pump inhibitor taken once daily before a meal is a standard first step for people who experience symptoms two or more days a week.
Viral and Bacterial Infections
A sore, burning throat is the hallmark of pharyngitis, and viruses cause the vast majority of cases. The average viral sore throat lasts about five to six days, with roughly half of people recovering by day six and over 90% feeling better by day eight. If you also have a cough, runny nose, hoarseness, or pink eye, a virus is the most likely culprit.
Strep throat, caused by group A Streptococcus bacteria, can produce a similar burning sensation but tends to come on more abruptly and without the cough and congestion that accompany a cold. The only reliable way to distinguish strep from a viral infection is a throat swab, since the symptoms overlap significantly. This distinction matters because strep requires antibiotics to prevent complications, while viral pharyngitis resolves on its own.
Postnasal Drip
When excess mucus drains from your sinuses down the back of your throat, it irritates the tissue and causes a raw, burning feeling. Allergies are one of the most frequent triggers, but sinus infections, cold air, and changes in humidity can all increase mucus production. The constant drainage can also make your tonsils and surrounding tissue swell, adding to the discomfort. You’ll typically notice this burning most at night or in the morning, since lying down encourages drainage to pool in the throat.
Pills and Medications
Certain medications can burn your throat and esophagus if they dissolve before reaching your stomach, a condition called pill esophagitis. The most common offenders are certain antibiotics (especially doxycycline), iron supplements, and vitamin C pills, all of which create acidic solutions when they mix with saliva or water. Gelatin capsules and large-sized pills are also frequent causes simply because they’re more likely to get stuck.
If you notice throat burning that started around the same time you began a new medication, the pill itself may be the problem. Swallowing medications with a full glass of water and staying upright for at least 30 minutes afterward significantly reduces the risk.
Airborne Irritants
Volatile organic compounds, or VOCs, are chemicals released by paints, cleaning products, new furniture, building materials, and many household products. The EPA identifies eye, nose, and throat irritation as one of the immediate health effects of VOC exposure. Cigarette smoke, wildfire smoke, and high levels of air pollution produce similar burning sensations. If your throat burning gets worse indoors or in specific environments and improves when you leave, airborne irritants are worth investigating. Improving ventilation and reducing the use of scented products or harsh cleaners can make a noticeable difference.
Less Common Causes
Eosinophilic esophagitis (EoE) is a chronic immune condition where a specific type of white blood cell builds up in the esophageal lining, causing inflammation that can feel like burning or difficulty swallowing. It’s diagnosed through a biopsy during an upper endoscopy and is increasingly recognized in both children and adults, particularly those with a history of allergies or asthma.
Burning mouth syndrome is another possibility, though it’s rarer. It causes a burning or tingling sensation in the mouth and sometimes the throat that recurs daily for more than two hours at a time, persisting for at least three months, with no visible cause on examination. It’s most common in postmenopausal women and can be frustrating to diagnose because the tissue looks completely normal.
Symptoms That Need Prompt Attention
Most throat burning improves within a few days to a week. However, certain symptoms alongside a burning throat signal something more serious: a fever above 101°F (38.3°C), difficulty swallowing or breathing, blood in your saliva or phlegm, a visible lump in the neck, or unexplained weight loss. Persistent hoarseness, ear pain, or worsening heartburn that doesn’t respond to over-the-counter treatment also warrants evaluation. These can be signs of conditions ranging from a severe infection to, in rare cases, esophageal or throat cancer, where early detection makes a significant difference in outcomes.