Canker Sores in the Throat - 5 Causes & How to Treat
Learn about the main causes of canker sores in the throat and the best ways to treat them.

Canker sores in the throat can be painful and uncomfortable, making it difficult to eat or talk. These small ulcers are usually harmless but can be triggered by various factors. Here are the top 5 causes and how to treat them.
1. Stress and Weakened Immunity
Emotional stress and a weak immune system can trigger canker sores.
What to do:
- Reduce stress with relaxation techniques.
- Strengthen immunity with a balanced diet and sleep.
2. Acidic or Spicy Foods
Citrus fruits, spicy foods, and vinegar can irritate the throat, increasing the risk of sores.
What to do:
- Avoid acidic and spicy foods until the sores heal.
- Drink warm herbal teas for relief.
3. Vitamin Deficiencies
Lack of B vitamins, iron, or zinc can contribute to frequent canker sores.
What to do:
- Eat foods rich in B vitamins (whole grains, eggs).
- Consider a multivitamin if needed.
4. Minor Injuries
Biting the inside of your cheek, brushing too hard, or hot drinks can cause throat ulcers.
What to do:
- Be gentle while brushing and chewing.
- Let hot foods cool before consuming.
5. Viral Infections
Viruses like cold sores (HSV-1) or hand-foot-mouth disease can cause throat ulcers.
What to do:
- Use antiviral medication if prescribed.
- Gargle with salt water to reduce discomfort.
Treatment Tips
- Rinse with salt water or baking soda.
- Apply honey or aloe vera to the affected area.
- Use over-the-counter pain relief sprays.
If symptoms persist for more than two weeks, consult a doctor to rule out infections or other conditions.