Red Spots on the Tongue: When to See a Doctor - Otolaryngology

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There are patchy red lesions on the tongue?


There are about 5 or 6 red spots on the surface of my tongue, which are not painful or swollen, and are approximately the size of half a pinky finger.
I'm not sure if it's due to eating something too hot or something else.
What could this be? Do I need to see a doctor? Thank you!

Xin Ba, 20~29 year old female. Ask Date: 2015/12/24

Dr. Zheng Jueyi reply Otolaryngology


Hello: If you have irregular red spots, it is recommended to seek medical attention for a physician to evaluate whether it is inflammation or another issue.
Wishing you safety and health.
Sincerely, Dr.
Cheng Jue-Yi, Director of the Department of Otolaryngology, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2015/12/24

More Info


When it comes to red spots on the tongue, there are several potential causes that can range from benign to more serious conditions. The presence of red spots, especially if they are not painful and do not exhibit swelling, can often be attributed to a variety of factors, including irritation, allergic reactions, or even dietary choices.

One common cause of red spots on the tongue is irritation from hot foods or beverages. If you have recently consumed something particularly hot, it is possible that the heat has caused localized irritation, leading to the appearance of red spots. This type of irritation is usually temporary and should resolve on its own as the tissue heals.

Another possibility is that the red spots could be related to a condition known as geographic tongue, which is characterized by irregular patches on the surface of the tongue that can appear red and inflamed. Geographic tongue is generally harmless and often does not require treatment, although it can sometimes be associated with sensitivity to certain foods.

Allergic reactions to food, medications, or oral hygiene products can also manifest as red spots on the tongue. If you have recently introduced a new food or product into your routine, consider whether it could be a potential allergen.

In some cases, red spots on the tongue can indicate a more serious condition, such as a vitamin deficiency (like vitamin B12 or folate), or infections like oral thrush or herpes simplex virus. These conditions may present with additional symptoms, such as pain, swelling, or changes in taste.

Given that your red spots are not painful and have not shown signs of swelling, it is likely that they are not a cause for immediate concern. However, it is essential to monitor the spots for any changes. If they persist for more than a couple of weeks, change in appearance, or if you develop additional symptoms (such as pain, swelling, or fever), it would be prudent to consult a healthcare professional for a thorough evaluation.

In summary, while red spots on the tongue can often be benign and self-limiting, it is important to remain vigilant. If you have any doubts or if the condition worsens, seeking medical advice is always a good course of action. A healthcare provider can perform a physical examination and may recommend further tests if necessary to determine the underlying cause of the red spots.

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