Why Are My Tonsils Swollen?


woman with sore throat and swollen tonsils.

The tonsils are an essential part of our lymphatic system, helping to defend our bodies against infections, viruses, and bacteria. Despite their important role, tonsils themselves can sometimes become swollen, inflamed, or infected. There are numerous reasons why this may occur.

Viral infections leading to swollen tonsils

The condition known as tonsillitis refers to the inflammation of the tonsils. While more common in children, adults can also suffer from tonsillitis. If this condition is accompanied by symptoms such as fever, weight loss, lumps in the neck or elsewhere, or becomes chronic, it is vital to consult an experienced ENT specialist promptly for appropriate treatment.

Several other viral infections can cause swollen tonsils, including:

  • Adenovirus: Responsible for the common cold, this virus typically results in a sore throat and may lead to bronchitis.
  • Mononucleosis (Epstein-Barr Virus): Often referred to as the “kissing disease,” it spreads through infected saliva.
  • Herpes Simplex Virus (HSV-1): This virus can cause cracked blisters on the tonsils.
  • Human Herpesvirus 5 (HHV-5): This virus can remain dormant in the body and flare up in individuals with weakened immune systems, including pregnant women.
  • Measles: A highly contagious virus affecting the respiratory system, which can also lead to swollen tonsils.

Bacterial infections as a cause

Although less common than viral infections, bacterial infections should not be overlooked as a cause of swollen tonsils. Proper diagnosis is critical to ensuring effective treatment.

  • Streptococcus Bacteria: The primary cause of strep throat, this bacterium leads to tonsil inflammation, difficulty swallowing, trouble opening the mouth, and bad breath. Without appropriate antibiotic treatment, strep throat can progress to rheumatic fever in children, an inflammatory condition affecting the heart, joints, and other tissues. It can also lead to post-streptococcal glomerulonephritis, a kidney disorder.

What are other causes of swollen tonsils?

Swollen tonsils can also result from various other factors, including:

  • Allergies: Allergic reactions can cause the tonsils to swell and become inflamed.
  • Sexually Transmitted Diseases (STDs): Infections like syphilis can cause mouth sores, and gonorrhea can lead to burning sensations and sores in the mouth.
  • Laryngopharyngeal Reflux (LPR): This condition causes stomach acid to back up into the throat, resulting in irritation, swollen tonsils, a constant need to clear the throat, coughing, and difficulty swallowing.
  • Cancer: Throat or tonsil cancer, often associated with the Human Papillomavirus (HPV), can also cause tonsil swelling.

When to see an ENT specialist for swollen tonsils

It is essential to know when to seek medical advice for swollen tonsils. Consult an ENT specialist if you experience the following symptoms:

  • Persistent sore throat lasting more than a few days
  • Difficulty swallowing or breathing
  • Severe pain in the throat or ear
  • Recurring bouts of tonsillitis
  • High fever or unexplained weight loss
  • Presence of lumps in the neck or elsewhere in the body
  • Visible pus or white patches on the tonsils
  • Chronic bad breath not relieved by oral hygiene measures

Early consultation with an ENT specialist can ensure accurate diagnosis and effective treatment, preventing complications and promoting faster recovery.

If you are experiencing any of the symptoms associated with swollen tonsils or if this issue becomes a chronic problem, it is important to seek medical attention. Find an ENT specialist near you to schedule a consultation and receive the necessary treatment to address the underlying cause of your swollen tonsils.

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