Tonsillectomy is most commonly indicated for two reasons: recurrent throat infections that meet a specific frequency threshold, and obstructive sleep-disordered breathing. Beyond those two primary triggers, surgery may also be recommended for peritonsillar abscesses, suspected cancer, chronic tonsil stones causing severe bad breath, and a rare childhood condition called PFAPA syndrome.
The Frequency Threshold for Recurrent Infections
Not every sore throat warrants surgery. Clinical guidelines use a well-established set of benchmarks known as the Paradise criteria to determine when recurrent infections are frequent enough to justify removing the tonsils. You generally meet the threshold if you’ve had seven or more documented sore throats in a single year, five or more per year for two consecutive years, or three or more per year for three consecutive years.
If your infection count falls below those numbers, the current recommendation is watchful waiting rather than surgery. This was reinforced in the most recent American Academy of Otolaryngology clinical practice guideline, updated in 2019. The reasoning is straightforward: throat infections tend to decrease over time on their own, in both children and adults. Studies tracking children with recurrent sore throats found that infection rates dropped from baseline regardless of whether the child had surgery, though children who did have a tonsillectomy experienced fewer sore throat days and missed less school in the first year afterward.
The key word in the criteria is “documented.” Infections should be confirmed by a clinician, not just recalled from memory. This distinction matters because it’s easy to overestimate how many throat infections you or your child has had over several years.
Sleep-Disordered Breathing in Children
In pediatric medicine, obstructive sleep apnea has become the most common reason for tonsillectomy. When enlarged tonsils physically block a child’s airway during sleep, removal of the tonsils (often along with the adenoids) is the first-line surgical treatment.
Signs that a child’s tonsils are causing sleep problems include habitual snoring, mouth breathing, restless sleep, bedwetting that starts after the child was previously dry at night, difficulty with attention, hyperactivity, fatigue, and behavioral problems. Some children are underweight because disrupted sleep affects growth hormones, while others are overweight. A sleep study can confirm the diagnosis and measure severity by counting how many times per hour the child’s breathing is partially or fully blocked. In children, more than one breathing disruption per hour paired with symptoms is considered abnormal.
Adults can also be referred for tonsillectomy for obstructive sleep apnea, though it’s less common. In adults, the obstruction is usually caused by multiple factors beyond the tonsils, so surgery alone is less likely to be a complete solution.
Peritonsillar Abscess
A peritonsillar abscess is a pocket of pus that forms next to the tonsil, typically as a complication of tonsillitis. Whether it leads to tonsillectomy depends largely on your history. If you had recurrent tonsillitis before the abscess developed, tonsillectomy is generally recommended because the underlying pattern of infection is likely to continue. If it’s a single abscess with no prior history of frequent throat infections, surgery is typically not needed. In one study, patients who underwent tonsillectomy six to twelve weeks after their abscess experienced no further tonsillitis or recurrent abscesses.
Suspected Cancer and Asymmetric Tonsils
When one tonsil is noticeably larger than the other, especially if the size difference appeared or progressed over a short period, a tonsillectomy may be recommended to rule out malignancy. Tonsil cancer, though uncommon, can present as a unilateral enlargement. Surgery in this context is both diagnostic and therapeutic: the removed tissue is examined under a microscope. Tonsillectomy is also performed when head and neck cancer has been detected elsewhere but the original tumor site hasn’t been identified, a situation called an unknown primary. Removing the tonsils helps determine whether the cancer originated there.
Tonsil Stones and Chronic Bad Breath
Tonsil stones, or tonsilloliths, are hardened deposits that form in the crevices of the tonsils. They’re made up of bacteria, dead cells, and debris, and they often produce a strong, foul smell. Most people manage them by dislodging the stones at home or with routine gargling. But when stones are large, recurrent, or causing persistent halitosis that doesn’t respond to other measures, tonsillectomy is a recognized treatment option. It eliminates the crypts where stones form, permanently solving the problem.
PFAPA Syndrome in Children
PFAPA syndrome causes predictable episodes of high fever every few weeks in young children, accompanied by mouth sores, sore throat, and swollen lymph nodes. It’s not an infection, so antibiotics don’t help. The condition is self-limiting, meaning children eventually outgrow it, but episodes can continue for years.
Tonsillectomy has shown a high success rate in preventing future fever episodes in children with PFAPA, though the medical community still considers it somewhat controversial because the disease resolves on its own. For families dealing with frequent, disruptive fever cycles, surgery is a reasonable option supported by clinical evidence.
When Surgery Is Not Recommended
Certain conditions make tonsillectomy risky or inappropriate. Children with a cleft palate or other structural differences that affect the connection between the throat and nasal passages may develop speech and swallowing problems after tonsil removal, because the tonsils help close off the nasal cavity during speech and swallowing. Bleeding disorders or significant anemia need to be identified and managed before surgery can be considered safely, since the tonsil bed has a rich blood supply. Active upper respiratory infections are also a reason to postpone the procedure.
Bleeding Risk After Surgery
Post-surgical bleeding is the most common complication of tonsillectomy. It occurs in roughly 2% to 5% of cases overall, with rates in children generally lower than in adults. Some studies report rates as high as 12% depending on the surgical technique used. Bleeding is classified as early (within the first 24 hours) or late (after 24 hours, often around days five through ten when the scab over the surgical site begins to separate). Most bleeding episodes resolve without a return to the operating room. In one large pediatric study, only about a third of patients readmitted for bleeding required a second procedure to control it.
What Recovery Looks Like
Children typically recover faster than adults. Most kids return to normal activity within a week to ten days, while adults often need two full weeks and report more intense pain. Throat pain peaks around days three through five after surgery and can radiate to the ears, which is normal because the throat and ears share nerve pathways. Staying hydrated is the single most important thing during recovery, as dehydration worsens pain and increases the risk of complications. Soft, cool foods are easiest to tolerate in the first week. Most people transition back to a regular diet within two weeks.