What Is Tonsillitis?
Tonsillitis is swelling and inflammation of the tonsils — the two soft tissue pads at the back of your throat. Common signs include sore throat, swollen tonsils, redness, and sometimes white or yellow patches. It is one of the most common reasons people visit a doctor, with about 7.3 million visits per year in the United States.
In most adult cases, a virus is the cause. Common culprits include adenovirus, influenza, parainfluenza, EBV (the virus behind mono), and herpes simplex virus. Bacterial tonsillitis is most often caused by Group A Streptococcus (GAS) — commonly known as "strep throat." Strep accounts for about 10–15% of adult sore throats and 30–40% of cases in children.
It is important to tell bacterial tonsillitis apart from viral tonsillitis. Strep throat needs antibiotic treatment to prevent rheumatic fever — a serious complication that can affect the heart, joints, and nervous system. Antibiotics also shorten symptoms and reduce how easily strep spreads.
Doctors use a scoring system called the Centor criteria (with a McIsaac age adjustment) to decide who needs testing. One point is given for each of the following:
- White or yellow patches on the tonsils
- Tender, swollen lymph nodes in the front of the neck
- No cough present
- History of fever
A score of 3–4 means testing and/or treatment is recommended. A score of 0–1 makes strep very unlikely, and antibiotics are not needed. One important note: mono (caused by Epstein-Barr virus) can look a lot like strep, especially in young adults. Amoxicillin and ampicillin should be avoided if mono is suspected, as they cause a widespread rash in up to 90% of mono patients.
Telehealth works well for tonsillitis evaluation. Your provider can assess your symptoms, calculate your Centor/McIsaac score, and order a rapid strep test or throat culture at a lab near you in Delaware, Maryland, or Washington when needed.
At Innocre Telehealth, our board-certified provider follows IDSA clinical guidelines carefully. The goal is to avoid unnecessary antibiotics while making sure true strep infections are caught and treated. For patients with frequent tonsillitis (7+ episodes in one year, 5 per year for 2 years, or 3 per year for 3 years), a referral to an ENT specialist for tonsil removal surgery is recommended.
Common Symptoms
Sore throat — often severe and abrupt in onset
Bacterial strep typically has sudden, severe onset without URI symptoms
Fever
High fever (>101°F) is characteristic of GAS pharyngitis
Tonsillar exudate (white or yellow patches on tonsils)
A Centor criterion; can be viral (mono) or bacterial (strep)
Tender anterior cervical lymph nodes
Painful lymph node swelling along the front of the neck
Difficulty swallowing (odynophagia or dysphagia)
Severe pain with swallowing; may prevent eating or drinking
Absence of cough
Sore throat without cough increases likelihood of GAS (Centor criterion)
Bad breath (halitosis)
From tonsillar crypts filled with debris or purulent exudate
Palatal petechiae (red dots on the soft palate)
Highly specific for GAS pharyngitis when present
How Innocre Treats Tonsillitis Online
Your board-certified provider follows IDSA guidelines for strep testing and treatment:
- Moderate Centor/McIsaac score (2–3) — a strep test is ordered before starting treatment.
- High score (4) — treatment may begin right away while waiting for test results.
A rapid strep test can be ordered at a lab near you in Delaware, Maryland, or Washington. Results are usually available within 24 hours. If the rapid test is negative but strep is still strongly suspected, a throat culture (90–95% accurate) is recommended as a follow-up.
When strep is confirmed, the preferred antibiotics are:
- Penicillin VK — 500 mg two or three times daily for 10 days. This is the top choice because strep has never developed resistance to it.
- Amoxicillin — 500 mg twice daily or 1000 mg once daily for 10 days. A common alternative that tastes better.
- For penicillin allergy — azithromycin (500 mg day 1, then 250 mg daily for 4 days) or cephalexin. Clindamycin is used when strep is resistant to azithromycin.
Relieving throat pain is a key part of tonsillitis care. Effective options include:
- Acetaminophen — 650–1000 mg every 6 hours for pain and fever.
- Ibuprofen — 400–600 mg every 6–8 hours with food. Very effective for throat pain.
- Cold drinks, ice pops, and salt water gargles — these soothe the throat locally.
- Prescription numbing mouthwash (viscous lidocaine "magic mouthwash") — may be prescribed for severe swallowing pain.
When tonsils are very swollen and making it hard to swallow (but not blocking the airway), a short course of steroids (dexamethasone 0.6 mg/kg single dose or a prednisone burst) can quickly reduce swelling and pain.
For mono causing severe sore throat, treatment focuses on rest, pain relief, and avoiding contact sports (because of the risk of an enlarged spleen). Steroids may be prescribed if swelling threatens the airway.
Recurrent tonsillitis may warrant tonsil removal surgery (tonsillectomy). The Paradise criteria for referral to an ENT surgeon are:
- 7 or more documented strep episodes in one year
- 5 per year for 2 years in a row
- 3 per year for 3 years in a row
Patients with three or more peritonsillar abscesses (infected pockets near the tonsils) are also typically referred for surgery. Your provider keeps a detailed record of repeat episodes and arranges ENT referrals when the criteria are met.
To reduce strep spread within your household, your provider will also recommend simple hygiene steps: wash hands often, replace your toothbrush after finishing antibiotics, and avoid sharing utensils or drinking cups while you are contagious.
⚠️ When to Go to the Emergency Room
Telehealth is appropriate for most uncomplicated tonsillitis. Seek emergency care immediately if you experience:
- • Signs of peritonsillar abscess: uvula deviation to one side, one tonsil significantly more swollen than the other, "hot potato" muffled voice, and inability to fully open the mouth (trismus) — requires emergency drainage
- • Drooling or inability to swallow saliva due to severe throat swelling — a potential airway emergency
- • Stridor — any audible high-pitched sound during inhalation indicating upper airway obstruction
- • Rapidly progressive neck swelling below the jaw or difficulty turning the neck — possible signs of retropharyngeal or parapharyngeal deep neck abscess
- • Severe dehydration from inability to swallow any fluids, particularly in children or elderly patients — may require IV hydration and parenteral antibiotics