Tonsils and adenoids: the numbers that justify surgery in a child

Two different problems, two different answers

Almost all confusion about this operation comes from treating it as one decision. It is two.

The first is recurrent throat infection. Here the honest evidence is that surgery produces a modest reduction in episodes over the following year or two, that the effect fades, and that most children get better on their own as their immune system matures. Because the benefit is small and the operation has real costs in pain, risk and money, guidelines set a counted threshold before recommending it. If your child is below that threshold, waiting is not neglect; it is the recommended course.

The second is obstructive sleep-disordered breathing. When enlarged tonsils and adenoids physically block a child's airway during sleep, the consequences are not trivial: broken sleep, low oxygen at night, daytime sleepiness, irritability, poor concentration that is sometimes mistaken for a behavioural or attention problem, bedwetting, poor growth, and in severe untreated cases effects on the heart. Removing the obstruction often works well and quickly, and parents frequently describe a transformation. This is the indication where the risk is under-treatment rather than over-treatment.

So the first thing to establish is which problem is being operated on. If the answer is vague, or if the reason given is simply that the tonsils look big, that is a reason to slow down. Tonsils are naturally larger in children than in adults and enlarge again with each infection. Size alone, in a child who sleeps quietly, breathes through the nose and eats normally, is not an indication for surgery.

How the counting actually works

The thresholds come from the Paradise criteria and are carried into the tonsillectomy guideline. Surgery may be recommended for a frequency of at least seven episodes in the past year, at least five per year for the last two years, or at least three per year for the last three years.

The part that gets skipped is what counts as an episode. Each one should have documented features: a temperature above roughly 38.3 degrees Celsius, tender or enlarged neck glands, coating on the tonsils, or a positive test for group A streptococcus. A sore throat with a cold, treated at home, is not a qualifying episode. Neither is a remembered one.

This matters because a decision made on a parent's recollection systematically overcounts. Nobody is lying; illness in a small child is stressful and memory compresses it. But if you are told your child has had ten throat infections and only three appear in any record, you do not have a documented indication yet.

What this means practically is worth doing even if surgery is eventually the answer. Keep a simple diary: the date, the temperature you measured, what the doctor found, whether a throat swab was done, what was prescribed, and how many days of school were missed. If you present a year later with a documented count above the threshold, the decision becomes straightforward and well-founded. If the count stays below it, you have avoided an operation your child did not need.

One important note on the other side: guidelines also allow surgery below the threshold when there are modifying factors, such as multiple antibiotic allergies, recurrent abscesses around the tonsil, or a syndrome called PFAPA. So a surgeon recommending surgery below the count is not necessarily wrong, but should be able to name the specific modifying factor.

Recognising sleep apnoea in a child

This is worth reading carefully even if you came here about sore throats, because childhood sleep apnoea is common, has real consequences, and is routinely missed.

Night-time signs: loud snoring most nights, not just with a cold; pauses in breathing that you can see; gasping or snorting; laboured breathing where the chest seems to pull inwards; sleeping with the neck extended or in odd positions; sweating heavily; restless sleep; and bedwetting in a child who was previously dry.

Daytime signs, which are the ones that get misattributed: mouth breathing, a persistently blocked nose, chronic bad breath, a nasal voice, poor appetite or slow weight gain, morning headaches, and behaviour problems. Children with sleep apnoea often do not look sleepy; they look hyperactive, irritable and unfocused, and they are sometimes assessed for attention problems while the actual cause is that they have not slept properly in years.

If several of these fit your child, say so explicitly. Filming thirty seconds of your child sleeping on your phone is genuinely one of the most useful things a parent can bring to a consultation. It converts a vague description into something the doctor can see.

Formal sleep study testing, polysomnography, is the reference test and is recommended particularly where the diagnosis is uncertain, where the child has other conditions such as obesity or Down syndrome, or where the tonsil size does not match the severity of symptoms. Access to paediatric sleep studies is limited across much of India, and it is reasonable to proceed on strong clinical grounds where a study is genuinely unavailable. It is not reasonable for nobody to have asked about sleep at all.

Adenoids, ears and the nose

Adenoids sit behind the nose where you cannot see them, which is why a doctor may talk about them after looking at an X-ray or passing a small scope. They cause a distinct set of problems: blocked nose, mouth breathing, snoring, a nasal voice, and recurrent middle ear problems including fluid behind the eardrum that dulls hearing.

That hearing point deserves emphasis. Persistent fluid behind the eardrum in a young child causes a mild hearing loss that is easy to miss and that can affect speech and school performance. If your child mishears, turns the volume up, seems inattentive, or has delayed speech, ask for a hearing test. Sometimes the right operation is grommets, small ventilation tubes in the eardrum, with or without adenoid removal, rather than anything to do with the tonsils.

Adenoids also shrink naturally with age, usually becoming much less significant by adolescence. So for a mild adenoid problem in a school-age child, time is on your side. For a child with real obstructive symptoms now, waiting several years while they sleep badly is not a neutral choice.

Removing adenoids is generally less painful than removing tonsils, with a shorter recovery. If both are proposed, ask whether both are needed for your child's specific problem, or whether one would do. For pure nasal obstruction and ear problems, the adenoids may be the target; for recurrent throat infection, the tonsils; for sleep apnoea, often both.

What the operation costs your child, honestly

Tonsillectomy is more painful than parents expect, and being warned properly is what gets families through it. Throat pain typically lasts about seven to ten days and often gets worse around day four to seven rather than steadily improving. Ear pain is common and is usually referred pain from the throat, not an ear infection. Bad breath and a white or yellow coating in the throat bed is normal healing, not infection.

The complication that must be understood before you consent is bleeding. Secondary bleeding can happen up to about two weeks after surgery, most often around days five to ten, typically as the scab separates. Any bleeding from the mouth after tonsillectomy is an emergency, including small amounts, including blood only seen when spitting, and including vomit that looks like coffee grounds, which is swallowed blood. A child can lose significant blood into the stomach without it being visible.

Before you take your child home, you need three things: written danger signs, a phone number that is answered at night, and a clear plan for which hospital to go to and how you will get there at two in the morning. If you live far from the hospital, say so and ask what that means for your discharge timing.

Pain control drives everything else. A child who is in pain will not drink, and a child who does not drink becomes dehydrated, which makes the pain worse and can lead to readmission. Ask for a scheduled pain relief plan by the clock rather than as needed, ask which medicines are safe, and specifically ask about codeine, which is not recommended for children after tonsillectomy. Cold drinks, ice cream, jelly and popsicles are legitimate medical treatment here rather than a treat.

Finally, the honest expectation for a child who had surgery for recurrent infection: they will still get sore throats. They cannot get tonsillitis, but the pharynx can still become infected. Parents who expect zero sore throats afterwards feel cheated. Parents who were told to expect fewer and milder episodes usually feel the operation was worth it.

Adults, and the one thing that must not be dismissed

Adults have tonsils removed less often, usually for recurrent tonsillitis meeting a similar counted standard, for repeated abscesses around the tonsil, for obstructive sleep apnoea as part of a wider assessment, or occasionally for severe tonsil stones and intractable bad breath. Recovery in adults is considerably more painful and slower than in children, commonly two weeks or more off work, and this is regularly understated at the point of consent.

The situation that must never be dismissed is a persistently enlarged tonsil on one side only, particularly in an adult, and even more so with a neck lump, a lasting change in voice, difficulty or pain on swallowing, unexplained weight loss, or a history of tobacco, alcohol or areca nut and gutkha use. Marked asymmetry that does not settle after infection resolves needs proper examination and sometimes a biopsy.

This site exists to help you avoid surgery you do not need. This is the paragraph where the opposite advice applies: a one-sided tonsil swelling that persists is a finding to investigate promptly, and India's rates of oral and throat cancer linked to tobacco and areca nut make that caution particularly relevant.