Lip Bumps: When to See a Dermatologist - Dermatology

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Lesion on the lip margin?


A few days ago, a lump with a diameter of 0.5 cm suddenly appeared on the edge of my lower lip.
At first, I thought it was a pimple and tried to squeeze it, but then I realized that it didn't behave like a typical pimple that releases pus.
It felt more like a small ball, but it was quite swollen.
When I checked it again yesterday, I noticed that it looked white inside, somewhat like pus.
This morning, after applying some pressure, a little bit of clear fluid and a small amount of pus came out.
Doctor, should I see a physician about this, or is it just a regular pimple?

Meng Meng, 10~19 year old female. Ask Date: 2016/11/24

Dr. Wu Yuxin reply Dermatology


Without actually seeing the lesion, it is impossible to make a definitive diagnosis.
If it is causing significant distress, please seek medical attention as soon as possible.

Reply Date: 2016/11/24

More Info


When it comes to lip bumps, particularly those that appear suddenly and exhibit characteristics such as swelling, a white center, and the presence of pus, it is essential to approach the situation with caution. While it might be tempting to dismiss it as a simple pimple, there are several factors to consider that could indicate the need for a consultation with a dermatologist.

Firstly, the description of your bump as being larger than a typical pimple and feeling like a "ball" suggests that it may not be a standard acne lesion. Common causes of lip bumps can include:
1. Pustules or Cysts: These can occur due to clogged pores or hair follicles, leading to the formation of pus-filled bumps. If the bump is indeed a cyst, it may require professional treatment to drain or remove it.

2. Cold Sores (Herpes Simplex Virus): If the bump is painful, itchy, or accompanied by other symptoms like fever or swollen lymph nodes, it could be a cold sore. Cold sores are caused by the herpes simplex virus and can recur, so early intervention is crucial.

3. Mucocele: This is a common cystic lesion that occurs when a salivary gland duct is blocked, leading to the accumulation of mucus. Mucoceles are typically painless and can appear as bluish or translucent bumps on the lip.

4. Infection: If the bump has a white center and is producing pus, it could indicate an infection, which may require antibiotics or other treatments.

5. Allergic Reaction or Contact Dermatitis: Sometimes, lip bumps can result from an allergic reaction to products such as lip balm, toothpaste, or food. If you have recently changed any products, consider this possibility.

Given these potential causes, it is advisable to see a dermatologist, especially since the bump has changed in appearance and has started to produce pus. A dermatologist can provide a proper diagnosis through a physical examination and, if necessary, perform additional tests. They can also recommend appropriate treatment options, which may include topical or oral medications, drainage of the bump, or other interventions.

In the meantime, avoid squeezing or picking at the bump, as this can exacerbate inflammation, lead to further infection, or cause scarring. Additionally, refrain from using any new products on your lips until you have a clearer understanding of what the bump is.

In summary, while it may be tempting to wait and see if the bump resolves on its own, the presence of pus and the unusual characteristics of the bump warrant a visit to a dermatologist. Early intervention can help prevent complications and ensure that you receive the appropriate care for your condition.

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