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Tonsillectomy is one of the most commonly performed ENT procedures in Singapore — but it is not a decision made lightly. Most patients who ask 'should I get my tonsils out?' have lived with recurrent tonsillitis for months or years, repeatedly treated with antibiotics, and are wondering whether there is a more permanent solution. The answer depends on clinical criteria that an ENT Specialist Singapore is trained to evaluate.
This guide — written for adults — explains the clinical signs that indicate tonsillectomy, what the surgery involves, and what to expect from recovery. For the children's guide, see our Tonsillectomy Guide for Parents. For a full explanation of tonsillitis types and treatment, see our Complete Tonsillitis Guide.
Section 1 of 5Clinical Criteria for Tonsillectomy in Adults
Tonsillectomy is not performed on the basis of a single bad episode. The internationally recognised clinical thresholds (Paradise Criteria) are:
| Criterion | Threshold | Why It Matters |
|---|---|---|
| Frequency of infections | 7+ documented episodes in 1 year OR 5+ per year for 2 consecutive years OR 3+ per year for 3 consecutive years | Below these thresholds, conservative management is preferred — immune benefit of tonsils still outweighs surgical risk |
| Severity of episodes | Each episode must include at least one: temperature >38.3°C, cervical lymphadenopathy, tonsillar exudate, or positive strep culture | Mild episodes that do not meet severity criteria do not count toward the threshold |
| Documentation | Episodes should be documented — ideally by a doctor | Good documentation strengthens the clinical case for surgery |
Beyond infection frequency, tonsillectomy is also indicated for:
- Obstructive sleep apnoea caused by tonsillar enlargement — especially when CPAP is not tolerated and tonsils are the primary site of airway obstruction
- Peritonsillar abscess (quinsy) — adults who have had a quinsy drained have a high recurrence risk; interval tonsillectomy is commonly recommended
- Tonsil stones (tonsilloliths) — when causing persistent severe bad breath, discomfort, or repeated infections that significantly impact quality of life
- Suspected tonsillar malignancy — unilateral tonsillar enlargement, firmness, or ulceration warrants urgent ENT assessment and biopsy
- Bleeding tonsil — any unexplained tonsillar bleeding requires urgent ENT review
Why Repeated Antibiotics Eventually Stop Working
Many patients with recurrent tonsillitis have been on multiple antibiotic courses and find that each successive infection seems to return faster. This is not antibiotic resistance in the usual sense — it is biofilm formation.
In recurrent tonsillitis, bacteria — particularly Group A Streptococcus — embed themselves in a protective polysaccharide matrix on the tonsillar surface called a biofilm. This matrix shields bacteria from antibiotics and the immune system. When antibiotic pressure is removed, bacteria re-emerge from the biofilm and re-infect the tonsillar tissue.
Tonsillectomy is effective precisely because it removes the tissue the biofilm inhabits. There is no surface left for bacteria to re-colonise.
Section 3 of 5The Tonsillectomy Procedure — What to Expect
Before Surgery
- Pre-operative assessment: blood tests (FBC, clotting), anaesthesia review, medication review (aspirin and anti-inflammatories should be stopped 1 week before surgery)
- Fasting: typically nil by mouth from midnight before a morning procedure
- The procedure is performed under general anaesthesia — you will be fully asleep
The Surgery Itself
Tonsillectomy is performed transorally — through the open mouth — with no external incisions. Several surgical techniques are used:
| Technique | Method | Notes |
|---|---|---|
| Cold steel dissection | Traditional surgical removal using scalpel and scissors | Well-established; low recurrence; slightly more intraoperative bleeding |
| Electrocautery (diathermy) | Uses electrical current to cut and seal simultaneously | Reduced intraoperative bleeding; slightly higher post-op pain from thermal effect |
| Coblation (radiofrequency ablation) | Low-temperature radiofrequency energy dissolves tissue | Less thermal damage; reduced post-op pain; increasingly popular for adults |
| Microdebrider (intracapsular) | Removes tonsillar tissue while preserving the capsule | Mainly used in children; faster recovery but slightly higher recurrence |
The procedure typically takes 20–30 minutes. Both tonsils are removed in full. Adults are usually discharged the same day or the following morning.
Recovery
Recovery from adult tonsillectomy takes 10–14 days. Key things to know:
- Pain is typically worst on days 4–7 — after the initial anaesthetic effect and as the white fibrin coating on the tonsillar beds begins to peel. This is normal healing, not infection.
- Analgesia schedule is important — take paracetamol and ibuprofen regularly on a schedule rather than waiting for pain to become severe. Do not stop analgesia because you feel okay — pain returns when it wears off.
- Hydration is essential — staying well hydrated speeds healing and reduces pain. Cold water, ice chips, and cold drinks are best. Avoid hot beverages, alcohol, and fizzy drinks for 2 weeks.
- Soft diet for 2 weeks — ice cream, yoghurt, soup, eggs, rice congee. Avoid hard, crunchy, or spicy foods that can dislodge the healing clot.
- Avoid strenuous physical activity for 2 weeks — increased blood pressure can trigger post-operative bleeding.
- No smoking — smoking significantly increases infection risk and delays healing.
Post-tonsillectomy bleeding is the most serious complication, occurring in approximately 2–3% of adult cases. If you experience bright red bleeding from the mouth or throat — even a small amount — go to A&E immediately. Do not wait to see if it stops. This is a surgical emergency.
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Contact UsTonsil Stones (Tonsilloliths) — Do They Require Surgery?
Tonsil stones are calcified deposits that form in the crypts (pockets) of the tonsil surface. They are white or yellowish, often foul-smelling, and can cause:
- Persistent bad breath (halitosis) — the primary symptom; caused by anaerobic bacteria living in the stone
- A sensation of something stuck in the throat
- Occasional mild sore throat or throat discomfort
- Ear pain — referred via shared nerve supply
Small tonsil stones are common and often dislodged naturally. They do not usually require surgery unless they are large, frequently recurring, or causing significant symptoms. Conservative management includes regular gargling with saline, good oral hygiene, and staying hydrated. Tonsillectomy is considered when stones are large, recurring despite conservative measures, or causing unacceptable symptom burden.
Section 5 of 5Frequently Asked Questions — Adult Tonsillectomy
Yes — adult recovery is generally more painful and takes longer than in children. Children's tonsillar tissue is typically less fibrous and their healing processes are faster. For adults, the worst pain usually peaks at days 4–7. Strict adherence to analgesia schedules and a soft diet makes a significant difference to the recovery experience.
Most adults require 10–14 days off work. Those in physically demanding jobs or roles requiring significant voice use (teachers, call centre workers, singers) may need up to 3 weeks. Desk-based workers often return at 10 days if pain is well-managed.
In adults, complete regrowth of tonsillar tissue is extremely rare. In young children who have a subtotal (intracapsular) tonsillectomy, partial regrowth can occasionally occur. Total tonsillectomy in adults is curative — the tonsils do not regenerate.
You will no longer get tonsillitis specifically. However, sore throats from other causes — cold, flu, post-nasal drip, acid reflux (LPR), or pharyngitis — can still occur. Tonsillectomy eliminates one specific cause of sore throat, not all possible causes.
- The internationally recognised criteria (Paradise Criteria) for adult tonsillectomy: 7+ episodes/year, or 5+ per year for 2 years, or 3+ per year for 3 years — with documented episode severity.
- Tonsillectomy is also indicated for quinsy history, tonsillar OSA, large tonsil stones, suspected malignancy, or unexplained tonsillar bleeding.
- Antibiotics stop working because bacteria form a biofilm on the tonsillar surface. Tonsillectomy removes the tissue the biofilm lives on — no surface, no infection.
- Adult recovery takes 10–14 days. Pain peaks at days 4–7. Post-tonsillectomy bleeding (2–3% of cases) is the most serious complication — go to A&E immediately if it occurs.
- No GP referral is needed for a private ENT consultation in Singapore. Medisave can be used for eligible ENT surgical procedures.
About Dr Gan Eng Cern
This article is medically reviewed by Dr Gan Eng Cern, a fellowship-trained ENT specialist and rhinologist practising at Mount Elizabeth Novena Hospital in Singapore.
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Last updated: April 30, 2026 · © Dr Gan Eng Cern ENT Clinic
