What is quinsy?
Quinsy is the common name for a peritonsillar abscess, a collection of pus that builds up in the tissue beside one of the tonsils, at the back of the throat. It usually develops as a complication of tonsillitis or a bad bacterial throat infection, when the infection spreads from the tonsil into the surrounding soft tissue and forms a pocket of pus. Unlike an ordinary sore throat or tonsillitis, quinsy does not clear up on its own and needs medical treatment.
Quinsy is most common in teenagers and young adults, though it can affect people of any age. It is important to recognise because, while it is very treatable, it will not resolve with rest and fluids alone and can become more serious if left untreated. The good news is that with prompt treatment — draining the pus and treating the infection — most people recover well and quickly. Knowing the warning signs helps you seek care at the right time.
Symptoms of quinsy
Quinsy symptoms are usually more severe than those of ordinary tonsillitis, and often affect one side of the throat more than the other. The pain can build over a day or two, sometimes after a sore throat that seemed to be improving then suddenly worsened. Common symptoms include:
- •A severe sore throat, usually much worse on one side
- •Difficulty and pain when swallowing, sometimes even swallowing saliva
- •Difficulty fully opening the mouth (called trismus)
- •A muffled or 'hot potato' voice
- •Swelling on one side of the throat, which may push the uvula (the dangling tissue at the back) to one side
- •Fever and feeling generally very unwell
- •Swollen, tender glands in the neck, often worse on the affected side
- •Drooling or difficulty managing saliva in more severe cases
Quinsy versus ordinary tonsillitis
Quinsy often develops from tonsillitis, so the two are related, but some features help tell them apart — and the distinction matters because quinsy needs urgent treatment while most tonsillitis is managed at home. Ordinary tonsillitis usually causes a sore throat that affects both sides fairly equally and, when viral, settles within about a week. Quinsy, by contrast, typically causes severe pain concentrated on one side, difficulty opening the mouth, and a changed, muffled voice.
A particularly telling sign is a sore throat that seemed to be getting better, or was being treated, then suddenly became much worse on one side, with new difficulty opening the mouth or swallowing saliva. If you or someone you are caring for has these features, it is important to seek medical help promptly rather than continuing with home remedies, because quinsy will not resolve on its own and the pus usually needs to be drained.
How is quinsy treated?
Quinsy is treated by a doctor, usually in a hospital or urgent care setting, and treatment has two parts: removing the pus and treating the infection. The pus is typically drained, either by drawing it out with a needle or by making a small incision, which usually brings rapid relief from the pain and pressure. This is done with local anaesthetic to numb the area. Antibiotics are then given to clear the underlying infection, and pain relief is provided.
Most people improve quickly once the abscess is drained and antibiotics are started, often feeling substantially better within a day or two. It is important to complete the full course of antibiotics and to keep well hydrated and rested during recovery. In some cases, if swallowing is very difficult, fluids may be given through a drip until the throat settles. Occasionally, for people with recurrent quinsy or frequent tonsillitis, removal of the tonsils may be considered later, once the acute infection has cleared.
Recovery and preventing complications
With prompt treatment, recovery from quinsy is usually quick and complete. After the abscess is drained and antibiotics started, the severe pain typically eases within a day or two, and most people are back to normal within a couple of weeks. During recovery, it helps to rest, drink plenty of fluids, and take pain relief as advised. Soft foods and warm drinks are often easier to manage while the throat heals.
Treating quinsy promptly matters because, left untreated, the infection can occasionally spread to nearby areas of the neck or, rarely, cause more serious problems such as difficulty breathing if swelling becomes significant. These serious complications are uncommon, especially with timely treatment, which is exactly why quinsy is treated as something that needs prompt medical attention rather than watchful waiting. Seeking care early is the single most important step in avoiding complications.
After recovering from quinsy, it is worth being aware that it can occasionally recur, and that a history of quinsy or repeated tonsillitis is one of the situations where a doctor might discuss whether removing the tonsils would be helpful. For most people, though, a single episode is successfully treated and does not come back, and no further action beyond completing treatment is needed.
When to seek urgent help
Quinsy is one of the throat conditions where timing genuinely matters, so it is important to know when to seek help without delay. You should seek urgent medical attention if you have a severe sore throat, particularly on one side, with difficulty opening your mouth, difficulty swallowing even saliva, or a muffled voice — especially if these follow a sore throat or tonsillitis that suddenly worsened. These are the classic signs of quinsy and warrant prompt assessment.
Certain symptoms are medical emergencies and need immediate care: difficulty breathing, being unable to swallow your own saliva, drooling, or a sensation of the throat closing. These are uncommon but serious, and should never be waited out. For anyone — but especially a child — with a severe throat problem and any difficulty breathing, do not delay in getting emergency help. In the great majority of cases, though, quinsy that is treated promptly resolves well, which is why acting early is so worthwhile.