Kids get their tonsils removed for two main reasons: the tonsils have grown large enough to block their airway during sleep, or the child keeps getting throat infections that won’t let up. Airway obstruction is now the more common reason by far, outpacing recurrent infections as the primary driver of surgery.
Enlarged Tonsils and Breathing Problems During Sleep
The most common reason children have their tonsils removed today is obstructive sleep-disordered breathing, which ranges from heavy snoring to full obstructive sleep apnea. Tonsils sit on either side of the throat, and in children, they can grow disproportionately large relative to the airway. When a child falls asleep and the muscles in the throat relax, oversized tonsils can partially or completely block airflow. The airway narrows further with each breath in, because the suction created by inhaling pulls the relaxed tissue inward. Research using airflow modeling has shown that when the airway at the tonsil site shrinks below a certain size, the negative pressure generated during breathing becomes strong enough to collapse it.
Parents often notice the signs before a doctor does. A child who snores loudly most nights, pauses in breathing, sleeps in unusual positions (head tilted back, mouth wide open), or seems restless may be struggling to breathe. During the day, these kids can seem overtired, hyperactive, or have trouble focusing at school. Bedwetting that persists past the expected age is another recognized sign. The clinical guidelines from the American Academy of Otolaryngology note that growth problems, poor school performance, behavioral issues, and worsening asthma can all improve after tonsil removal in children with documented sleep apnea.
For straightforward cases where a child has large tonsils and obvious nighttime breathing problems, a sleep study isn’t always required before scheduling surgery. But guidelines recommend one for children under two, those who are obese, and those with conditions like Down syndrome, craniofacial differences, neuromuscular disorders, or sickle cell disease. A sleep study is also useful when the severity of symptoms doesn’t match what the doctor sees on exam.
Recurrent Throat Infections
Chronic strep throat and tonsillitis were once the top reason for tonsil removal, and they still account for a significant share of surgeries. But doctors don’t recommend the procedure after just a few bad infections. The threshold, known as the Paradise criteria, is specific: at least seven documented episodes in one year, five per year for two consecutive years, or three per year for three consecutive years. Each episode needs to be backed up by at least one objective finding, such as a fever above 101°F, swollen lymph nodes in the neck, pus on the tonsils, or a positive strep test.
If a child hasn’t hit those numbers, the recommended approach is watchful waiting. Many children naturally outgrow frequent throat infections as their immune system matures and their airway grows larger. That said, doctors may still consider surgery below those thresholds in certain situations: if the child has multiple antibiotic allergies that limit treatment options, a history of abscesses forming near the tonsils, or a condition called PFAPA syndrome.
PFAPA Syndrome
PFAPA stands for periodic fever, aphthous stomatitis, pharyngitis, and adenitis. It’s a condition where a child develops clockwork-like fever episodes every few weeks, along with mouth sores, sore throat, and swollen neck glands. The episodes are predictable enough that parents can often tell one is coming days in advance. PFAPA isn’t caused by an infection, and antibiotics don’t help.
Tonsil removal is remarkably effective for PFAPA. A Cochrane review of the available trial data found that surgery reduced the frequency of episodes from roughly one every two months to less than one every two years. When episodes did still occur after surgery, they were shorter, averaging about 1.7 days compared to 3.5 days without surgery. The number needed to treat was just two, meaning for every two children who had the surgery, one experienced complete and lasting resolution of symptoms.
What Happens During Recovery
Recovery from a tonsillectomy typically takes 10 to 14 days. Throat pain is expected and often peaks around days three through five, not immediately after surgery. Kids may also have ear pain (referred from the throat), bad breath, and a low-grade fever in the first few days. Mouth breathing and snoring are common during healing and usually resolve within two weeks as swelling goes down.
Hydration is the single most important thing during recovery. Dehydration is one of the top reasons kids end up back in the emergency room after surgery. Cold fluids are easiest to tolerate. Hot drinks, carbonated beverages, and citrus juices tend to sting and should be avoided. Soft, cool foods like yogurt, pudding, ice cream, cold pasta, and popsicles work well early on. Sharp, crunchy, or spicy foods can irritate the healing tissue and should wait until the throat has fully healed.
A cool-mist humidifier near the bed helps with the mouth dryness that comes from breathing through the mouth at night. Most children return to school and normal activity within about two weeks, though some bounce back sooner.
Bleeding Risk After Surgery
The most serious complication of tonsil removal is bleeding, which can happen during the first two weeks of healing as scabs in the throat fall off. A national study of over 96,000 pediatric tonsillectomies found that about 2% of children returned to the emergency department or hospital for bleeding. For most children, the predicted risk falls between roughly 1% and 5%, depending on age and other factors. Small amounts of blood-tinged saliva are normal, but bright red blood or frequent swallowing (a sign of blood trickling down the throat) needs immediate medical attention.
Partial vs. Total Tonsil Removal
There are two broad surgical approaches. Total tonsillectomy removes the entire tonsil down to the muscle wall of the throat. Partial tonsillectomy (sometimes called intracapsular tonsillotomy) shaves down the tonsil tissue but leaves a thin rim intact to protect the underlying muscle. The partial approach is primarily used when the reason for surgery is airway obstruction rather than infection, since leaving a small amount of tissue behind could theoretically allow future infections.
The tradeoff is recovery comfort. Children who have partial removal experience less pain, less bleeding (one large meta-analysis reported a 0.2% bleeding rate for partial versus 2.9% for total), and a faster return to normal eating and activity. The concern about tonsil tissue regrowing after partial removal has not been borne out in follow-up studies tracking children for a year, particularly when newer instruments are used to remove tissue precisely. Both approaches are equally effective at resolving the breathing obstruction.
Long-Term Effects on the Immune System
Tonsils are part of the immune system, positioned at the entrance to the throat where they encounter germs early. This leads many parents to wonder whether removing them leaves a child more vulnerable to illness. Two systematic reviews have concluded that tonsil removal does not significantly harm the body’s overall immune defenses. Levels of key antibodies measured before and after surgery show no meaningful change in the short term, and the cellular immune response remains intact.
The picture gets slightly more nuanced with upper respiratory infections. Some population-level studies have found a modestly higher rate of common colds and upper respiratory illnesses after tonsillectomy, while others have found no difference or even a decrease. The evidence is genuinely mixed and likely depends on the individual child. What’s clear is that for kids who meet the criteria for surgery, the benefits of better sleep or freedom from constant throat infections outweigh the theoretical and small immune tradeoffs.