Persistent Injection Bumps: What to Do After 10 Months? - Family Medicine

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After receiving the injection, a lump has formed that has not disappeared for 10 months..?


About 10 months ago, I went to the emergency room due to abdominal pain.
The nurse administered pain relief and an injection to promote gastrointestinal motility in the outer upper areas of both my buttocks.
After the injection, I massaged the area, but when I got home, I noticed hard lumps on both sides.
Now, 10 months later, the lumps have decreased in size but are still about 2 centimeters.
Doctor, what should I do? Should I see a doctor? Which specialty should I consult? Thank you.

Elaine, 30~39 year old female. Ask Date: 2020/03/10

Dr. Chen Bozhang reply Family Medicine


It is recommended that you return to the original hospital to consult with the physician from the same specialty.

Reply Date: 2020/03/10

More Info


Persistent injection bumps, also known as injection site nodules or lumps, can occur after receiving an injection. These lumps are often a result of the body’s reaction to the injected substance, which can include inflammation, irritation, or even the formation of scar tissue. In your case, it has been 10 months since the injections, and while the lumps have decreased in size, they are still present and noticeable.

First and foremost, it is advisable to consult a healthcare professional regarding your concerns. Given that the lumps have persisted for an extended period, it would be prudent to seek medical evaluation. You can start by visiting your primary care physician, who can assess the lumps and determine if further evaluation is necessary. If needed, they may refer you to a specialist, such as a dermatologist or an orthopedic surgeon, depending on the nature of the lumps and any associated symptoms you may have.

When you visit the doctor, be prepared to provide a detailed history of the injections, including the type of medication administered, the exact location of the injections, and any symptoms you have experienced since then. This information will help the physician make a more accurate diagnosis.
In most cases, injection site lumps are benign and may resolve on their own over time. However, if the lumps are painful, growing, or accompanied by other symptoms such as redness, warmth, or discharge, these could be signs of an infection or other complications that require medical intervention.

In the meantime, here are some general recommendations for managing persistent injection bumps:
1. Warm Compresses: Applying a warm compress to the area can help improve blood circulation and may promote healing. This can also help alleviate any discomfort associated with the lumps.

2. Avoid Manipulation: While it may be tempting to massage or manipulate the lumps, it is generally advisable to avoid doing so, as this can exacerbate inflammation or lead to infection.

3. Monitor Changes: Keep an eye on the lumps for any changes in size, shape, or associated symptoms. Documenting these changes can be helpful for your healthcare provider.

4. Pain Management: If you experience discomfort, over-the-counter pain relievers such as acetaminophen or ibuprofen can be used, but it’s best to consult with your doctor before taking any medication.

5. Follow-Up: If the lumps do not resolve or if you have concerns about them, follow up with your healthcare provider for further evaluation and management.

In conclusion, while persistent injection bumps are often harmless, it is essential to have them evaluated by a healthcare professional, especially since they have lasted for 10 months. Early assessment can help rule out any potential complications and provide you with peace of mind.

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