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Tonsillitis

Expert review by:
  • Dr Ade Adeniyi, Lead physician, Bupa
Content review by:

Key points

  • Tonsillitis is the inflammation of the tonsils, commonly caused by viral or bacterial infections.
  • Tonsillitis is not contagious, but you can catch the infections that cause it.
  • Tonsillitis symptoms include sore throat, high temperature, headache, and you may generally feel unwell.
  • Tonsillitis usually goes way on its own within a week and can be managed with over-the-counter medicines. Other treatments are available if it doesn’t improve on its own.

What is tonsillitis?

Tonsillitis means you have swollen (inflamed) tonsils. Your tonsils are two small round lumps of tissue at the back of your throat. You may have a sore throat, swollen tonsils, and pain when you swallow.


An image showing the soft tissues of the mouth and throat

What causes tonsillitis?

Tonsillitis is a usually caused by a viral infection. Viruses causing tonsillitis include:

  • the common cold virus
  • the flu virus (influenza)

For around one in every three people, tonsillitis is caused by bacteria. Most bacterial tonsillitis is caused by streptococcus bacteria – specifically group A beta-haemolytic streptococcus bacteria. This is sometimes called ‘strep throat’.

Is tonsillitis contagious?

Tonsillitis itself isn’t contagious. Tonsillitis is often caused by cold and flu viruses that you can catch. You may also get tonsillitis if streptococcal bacteria affect your throat.

Symptoms of tonsillitis

If you have tonsillitis, you’ll probably have a sore throat. But a sore throat isn’t always due to tonsillitis.

Other symptoms of tonsillitis may include:

  • pain when swallowing
  • finding it hard to swallow
  • earache
  • high temperature (over 38°C)
  • bad breath
  • headache
  • feeling generally unwell
  • feeling sick or vomiting
  • tummy pain

You may also notice that you have swollen tonsils and swollen glands in your neck. Your tonsils may be covered with a white coating or white flecks of pus.

Tonsillitis symptoms are similar to glandular fever symptoms. Glandular fever is a viral infection affecting mostly teenagers and young adults. Your GP may ask you to have a blood test if they suspect glandular fever.

Should I see my GP about a sore throat?

You don’t normally need to see a GP about a sore throat. Tonsillitis usually gets better within a week without needing to visit a GP. But if you’re worried about symptoms, or they don’t improve, see a GP.

Diagnosis of tonsillitis

To see if you have tonsillitis, a GP will examine your throat and tonsils. They may:

  • use a bright torch to see the inside of your mouth better
  • use a tongue depressor to push your tongue down gently
  • feel around your neck to see if you have swollen glands

Under 18 GP Appointments

We now offer GP appointments for children under 18 via our remote video service (UK wide) and face to face appointments at selected centres. Please note that these appointments cannot be booked online so please call 0330 822 3072 for more information or to book. Lines are open Monday to Friday 8am to 8pm, Saturday and Sunday 9am to 5pm. We may record and monitor our calls. Available from £49.

To book or to make an enquiry, call us on 0343 253 8381

Self-help for tonsillitis

Here are some ways to ease your tonsillitis symptoms at home:

  • rest and take it easy for a few days
  • drink plenty of fluids
  • drink warm tea with honey, or cold and iced drinks
  • gargle with warm salt water for throat pain
  • try throat lozenges throat sprays to ease throat pain

Over-the-counter medicines such as paracetamol or ibuprofen can help ease a sore throat and high temperatures. Ask your pharmacist for advice.

Treatment of tonsillitis

Most people find that tonsillitis symptoms improve with self-help. Antibiotics won’t work if your tonsillitis is caused by a viral infection. A GP may give antibiotics for tonsillitis if:

  • your symptoms are very bad, such as severe bacterial infection
  • you could be prone to serious complications (see our section on complications)

GPs usually prescribe a 5 to 10-day course of penicillin. Tell your GP if you’re allergic to penicillin so they can give you a different antibiotic.

It’s important to take antibiotics properly. Complete the full course, even if you start to feel better. This helps to get rid of the bacteria and reduces the risk of antibiotic resistance (when antibiotics no longer work against the bacteria). Read the patient information leaflet carefully and see a pharmacist if you have questions.

Do I need surgery for tonsillitis?

A GP may refer you to an ear, nose, and throat (ENT) surgeon if you need your tonsils removed. This operation is called a tonsillectomy.

Some people get tonsillitis again and again. This is called recurrent tonsillitis and may be a reason to consider tonsil removal by tonsillectomy.

Your doctor may also recommend tonsillectomy if you’ve had abscess on your tonsils. This can be a complication of tonsillitis.

For children, your GP may recommend waiting for tonsillitis to get better on its own before considering surgery. As children get older, they are less likely to have tonsillitis.

Complications of tonsillitis

Tonsillitis usually doesn’t cause long-term problems. Severe infection or complications are more likely if you have a weak immune system. Complications are also more common in young children and older people.

Bacterial tonsillitis can sometimes lead to a build-up of pus on or around your tonsils. This is called a peritonsillar abscess or quinsy. This may cause very bad throat pain, often worse on one side. You may also have other symptoms, which include:

  • earache
  • high temperature
  • difficulty swallowing due to pain
  • difficulty opening your mouth

Peritonsillar abscess is more common in teenagers and young adults. But children can get it too. The abscess is usually treated with antibiotics and surgery to drain the pus.

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