Peritonsillar abscess: symptoms, treatment, and when to worry
Last updated September 3, 2026.
A peritonsillar abscess, or quinsy, is a pocket of pus that forms in the tissue beside a tonsil, almost always as a complication of tonsillitis. It causes severe one-sided throat pain, a muffled voice, and trouble opening the mouth. It will not get better on its own and needs urgent hospital treatment.
What does it feel like?
The pattern is distinctive: a sore throat that becomes dramatically worse on one side, pain severe enough to make swallowing hard or impossible, drooling because you cannot swallow saliva, a muffled "hot potato" voice, difficulty opening your mouth fully, and ear pain on the same side. Fever, swollen neck glands, and bad breath usually come along. It most often follows a tonsillitis that seemed to be improving, then roared back on one side.
What actually helps?
- Hospital, today: quinsy is treated by draining the pus with a needle or small cut, plus antibiotics and often IV fluids and pain relief. Relief after drainage is usually rapid.
- Finish every antibiotic course: many cases follow tonsillitis where antibiotics were stopped early once symptoms eased. Completing the course lowers the risk.
- Pain control while you get there: paracetamol or ibuprofen per the packet, small sips of fluid if you can manage them, and nothing that needs chewing.
- Do not try to drain it yourself: the abscess sits near major blood vessels. Drainage is a clinician's job.
- Ask about recurrence: if you have had quinsy or repeated bad tonsillitis, an ear, nose, and throat review may discuss tonsillectomy to prevent repeats.
When is it an emergency?
Quinsy is always urgent, and it becomes an emergency the moment the airway is threatened. Call 911 or get to an emergency department now if you are struggling to breathe, cannot swallow your own saliva and are drooling, cannot open your mouth more than a crack, or your voice and breathing sound increasingly muffled or noisy. Swelling this close to the airway can worsen fast. Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper.
What a Pymander AI doctor consult looks like
Illustrative example, not a real member's messages.
Common questions
How do I know if it is quinsy rather than tonsillitis?
The one-sidedness is the giveaway. Tonsillitis hurts on both sides and you can still swallow. Quinsy escalates: pain concentrated on one side, swelling pushing the tonsil and palate across, a muffled hot-potato voice, drooling because swallowing is too painful, and trouble opening your mouth. A sore throat that improves then surges back worse on one side is the classic story.
Can a peritonsillar abscess go away with antibiotics alone?
Occasionally, a very early case caught before much pus collects can settle with IV or strong oral antibiotics alone, but once an abscess has formed, drainage is the treatment that works. Antibiotics alone leave the pus pocket sitting next to your airway. This is why quinsy is a hospital problem rather than a wait-and-see one.
What does the drainage procedure involve?
Usually needle aspiration: after numbing the area, the doctor draws the pus out with a syringe, sometimes confirming the spot with ultrasound. A small cut is an alternative. It sounds grim but relief is typically immediate and dramatic, and it is done awake in the emergency or ENT department. You then go home or stay briefly for IV antibiotics and fluids.
Will I get quinsy again?
Most people have it once. Recurrence is more likely if you have had repeated tonsillitis or a previous quinsy, and in that situation an ENT team may recommend a tonsillectomy, either after recovery or, in some cases, during the same illness. It is a discussion worth having if your tonsils keep landing you in hospital.
Can children get peritonsillar abscess?
Yes, though it is commoner in teenagers and young adults. The signs are the same but harder to spot in a child who cannot describe them: refusing all food and drink, drooling, a changed voice, and turning the head to one side. Any of those with a severe sore throat means same-day hospital assessment.
Is quinsy contagious?
The abscess itself is not contagious, but the tonsillitis that preceded it often was, usually viral or strep. Normal hygiene around coughs, shared cups, and kissing applies while someone is ill with the initial throat infection. By the time an abscess has formed, the person belongs in hospital, not at work or school anyway.