Lip Bumps: When to Seek Dermatological Care - Dermatology

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Lip issues


Hello Doctor: Three weeks ago, I noticed a translucent lump about 1 cm in size on the inside of my lower lip.
About a week ago, it turned bright red, and today, after accidentally biting it, it has changed to a purplish-black color.
When I press on the lump, it moves but does not hurt.
Should I go to the hospital for a consultation? Thank you.

Niming, 10~19 year old female. Ask Date: 2023/11/04

Dr. Wu Yuxin reply Dermatology


It is recommended to see an oral surgeon or an otolaryngologist.

Reply Date: 2023/11/04

More Info


When it comes to understanding lip bumps, particularly those that appear on the inner lip, it is essential to consider several factors before deciding whether to seek dermatological care. Based on your description of a translucent bump that has changed color and size, there are a few potential causes to consider.

Firstly, the bump you described could be a mucocele, which is a common type of cyst that forms when a salivary gland becomes blocked or damaged. Mucoceles are typically painless and can appear as clear or bluish bumps on the lip or inside the mouth. They often resolve on their own, but if they persist or become bothersome, a healthcare provider may recommend treatment.

Another possibility is a fibroma, which is a benign tumor made up of connective tissue. These can also appear as painless lumps in the mouth and may change in color due to irritation or trauma, such as biting. While fibromas are generally harmless, they can be removed if they cause discomfort or cosmetic concerns.

Your bump's change in color from translucent to bright red and then to purple-black after biting it could indicate some degree of trauma or bleeding within the bump. This could suggest that the bump is reacting to irritation, which is not uncommon. However, if the bump becomes painful, continues to grow, or shows signs of infection (such as increased redness, swelling, or discharge), it is crucial to seek medical attention.

In general, you should consider visiting a dermatologist or oral surgeon if:
1. The bump persists for more than two weeks without improvement.

2. It changes in size, shape, or color significantly.

3. You experience pain, discomfort, or any other concerning symptoms.

4. There are signs of infection, such as pus, increased warmth, or fever.

In the meantime, avoid biting or irritating the bump further, as this could exacerbate any underlying condition. Maintaining good oral hygiene is also essential to prevent any potential infections.

In summary, while many lip bumps are benign and may resolve on their own, your symptoms warrant a careful evaluation. If you have any doubts or if the bump does not improve, it is always best to err on the side of caution and consult a healthcare professional. They can provide a proper diagnosis and recommend the best course of action based on your specific situation.

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