Are Side Effects of Danazol Normal After Chocolate Cyst Surgery? - Obstetrics and Gynecology

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Hello doctor, I had chocolate cyst surgery six months ago, and after starting on Danazol, I have been experiencing frequent breast tenderness for the past month or two.
I also started having pain in both armpits, but I haven't felt any noticeable lumps.
The breast pain is in the flat tissue, especially pronounced on the inner side.
Is this normal? Thank you.

Niming, 20~29 year old female. Ask Date: 2021/01/23

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it is recommended to see a breast surgeon to check for any issues.
Wishing you good health.

Reply Date: 2021/01/23

More Info


After undergoing surgery for a chocolate cyst, it is not uncommon to experience various side effects from medications such as Danazol. Danazol is a synthetic androgen that is often prescribed to treat endometriosis and related conditions, including chocolate cysts (which are essentially endometriomas). The side effects you are experiencing, such as breast tenderness and pain in the axillary region, can indeed be attributed to the hormonal changes induced by Danazol.

Danazol works by suppressing the production of estrogen, which can lead to a decrease in the size of endometriomas and alleviate symptoms associated with endometriosis. However, because it mimics male hormones, it can also produce side effects that are similar to those experienced during hormonal fluctuations. Common side effects of Danazol include weight gain, acne, hirsutism (excessive hair growth), mood changes, and breast tenderness. The breast pain you are experiencing, particularly in the inner regions, may be due to the hormonal imbalance caused by the medication. This is a relatively common side effect and is usually temporary.

It is important to monitor these symptoms closely. While breast tenderness can be a normal side effect, if you notice any unusual changes, such as lumps or significant changes in breast tissue, it is crucial to consult your healthcare provider. They may recommend imaging studies, such as a mammogram or ultrasound, to rule out any other underlying issues.

Regarding the pain in your axillary region, this could also be related to hormonal changes or even muscular tension due to changes in posture or activity levels post-surgery. If the pain persists or worsens, it would be advisable to discuss this with your doctor as well.

In terms of the duration of these side effects, they can vary from person to person. Some individuals may find that their symptoms improve after a few weeks of treatment, while others may experience them for the duration of their medication regimen. If the side effects become intolerable, your doctor may consider adjusting your dosage or switching to a different treatment option.

It is also worth noting that after surgery for chocolate cysts, regular follow-up appointments are essential to monitor your recovery and the effectiveness of the treatment. Your healthcare provider may suggest additional therapies, such as hormonal contraceptives or GnRH agonists, to manage symptoms and reduce the risk of recurrence.

In conclusion, while the side effects you are experiencing from Danazol are not uncommon, it is important to maintain open communication with your healthcare provider. They can provide guidance on managing these side effects and ensure that your treatment plan is tailored to your needs. If you have any concerns about your symptoms or the medication, do not hesitate to reach out for further evaluation and support.

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