When you’re already feeling awful from a cold, flu, or sinus infection, tooth pain can feel like the last straw. A lot of people wonder, Why does my tooth hurt when I’m sick? While this may seem unrelated at first glance, your illness and your oral discomfort are often very closely linked.

Common Reasons Why Your Teeth Hurt When You Are Sick

1. Sinus Pressure and Congestion

One of the more common reasons for tooth pain with being sick is sinus pressure. Your upper molars are located in close proximity to your sinus cavities. When your sinuses are inflamed or congested, (as in a cold or sinus infection), the inflammation can push on the roots of your upper teeth causing discomfort.

2. Dehydration and Dry Mouth

Illness can cause dehydration, but especially if you have a fever or are taking medications like antihistamines. Dehydration leads to dry mouth, which usually means less saliva production. Saliva protects your teeth by helping to prevent decay and sensitivity.

3. Grinding Your Teeth (Bruxism)

When you are stressed and sick, you may start grinding your teeth without even realizing it, leading to tooth sensitivity, tooth pain or damage.

4. Inflamed Gums

Viral illnesses, in addition to poor oral hygiene while sick can cause inflamed or irritated gums which can make your teeth feel sore or tender.

5. Nutritional Deficiencies

Being sick may impair your appetite or continue to eat less than balanced meals that may cause vitamin deficiencies (such as Vitamin C or B12) that affect the health of your gums and nerves.

6. Tooth Sensitivity from Hot or Cold Fluids

When you are sick you would likely drink more hot teas or cold drinks, if you have any minor enamel erosion, or exposed roots you may experience sensitivity.

What Should You Do About Tooth Pain When Sick?

• Try using a humidifier to ease sinus pressure while you are sick.
• Remember to drink fluids and stay hydrated to prevent dry mouth.
• Good oral hygiene is still important even when sick (brush, floss, rinse).
• If using sugar cough syrup try to rinse after use, or avoid it altogether.
• Consider taking pain relievers or decongestants while sick (check with your doctor).
• Try using a salt water rinse, to help soothe inflamed gums.

When Should You See a Dentist?

If your tooth pain:

• Has continued after recovery
• Is extreme or throbbing
• Is a certain tooth
• Has swelling or fever

It is time to see the dentist! You may be dealing with more than just a cold.

Conclusion

So, why do your teeth hurt when you’re sick? The answer often lies in your body’s response to illness. Whether through sinus inflammation, dehydration, stress, or weakened oral hygiene habits.

Staying mindful of these connections can help you prevent unnecessary discomfort and keep your mouth healthier, even when you’re under the weather.

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