Injection Site Pain and Hardness After Menstrual Induction

Menstrual induction injection causing a lump in the buttock?

After receiving the menstrual induction injection in January, there was some tenderness, which subsided a few days later.
However, on April 22, I noticed that the injection site (upper left side of the buttock) is painful.
There is no swelling, but there is a hard lump when I touch it.
Could this be related to the menstrual induction injection? I thought it should be unlikely since it's been a while, but there is no evidence of any trauma or injury in that area, so I'm quite puzzled.
If I need to see a doctor, should I return to my previous obstetrician-gynecologist for an evaluation, or should I consult a different specialist?

Bi Ya, 10~19 year old female. Ask Date: 2023/04/22

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, it could be related to the injection.
You can apply a warm compress.
If there is no improvement, you may want to return to the original facility for further evaluation.
Wishing you good health.

Reply Date: 2023/04/22

More Info

Injection site pain and hardness can be concerning, especially when it occurs long after the injection has taken place. In your case, it seems that you received an injection for menstrual induction in January, and now, several months later, you are experiencing pain and a hard lump in the area where the injection was administered.
First, it is important to understand that localized reactions to injections can occur. These reactions may include pain, swelling, and the formation of hard lumps at the injection site. Such reactions can be due to several factors, including the type of medication injected, the technique used during the injection, and individual patient responses.
In your situation, the pain and hardness you are experiencing could be related to the injection itself. While it is true that many injection site reactions resolve within a few days to weeks, some individuals may experience prolonged reactions. The hard lump you feel could be a result of localized inflammation or a small hematoma (a localized collection of blood outside of blood vessels) that has formed due to the injection. It is also possible that scar tissue has developed at the injection site, which can sometimes happen after intramuscular injections.

Another possibility is that the pain and hardness are unrelated to the injection and could be due to other factors, such as muscle strain, nerve irritation, or even a benign cyst. Given that you mentioned there are no visible signs of trauma or injury, it is less likely that the pain is due to an external injury.

If you are considering seeing a doctor, it would be advisable to start with your gynecologist, especially since the injection was related to menstrual induction. Your gynecologist can evaluate the injection site and determine if the symptoms are related to the injection or if further investigation is needed. If your gynecologist feels that the issue may be more musculoskeletal or neurological in nature, they may refer you to a different specialist, such as a pain management specialist or a neurologist.

In the meantime, you can try some conservative measures to alleviate the discomfort. Applying a warm compress to the area may help reduce pain and promote blood flow, which can aid in healing. Over-the-counter pain relievers, such as ibuprofen or acetaminophen, can also be used to manage pain, but be sure to follow the recommended dosages.

In summary, while it is possible that the pain and hardness you are experiencing are related to the injection, it is also important to consider other potential causes. Consulting with your gynecologist is a good first step, as they can provide a thorough evaluation and guide you on the appropriate next steps. If symptoms persist or worsen, further imaging or evaluation may be necessary to rule out other underlying conditions.

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