**Core Concept**
Cyclic mastalgia is a common condition characterized by breast pain that occurs in association with the menstrual cycle. The pathophysiology involves hormonal fluctuations, particularly an increase in estrogen levels, leading to breast tenderness. Treatment options often focus on managing symptoms and addressing underlying hormonal imbalances.

**Why the Correct Answer is Right**
Tamoxifen is a selective estrogen receptor modulator (SERM) that can exacerbate cyclic mastalgia by promoting estrogenic effects on breast tissue. In contrast, other treatment options for cyclic mastalgia include nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen, bromocriptine to reduce prolactin levels, and danazol to suppress gonadotropin release. Tamoxifen's estrogenic effects make it contraindicated in this condition.

**Why Each Wrong Option is Incorrect**
**Option A:** *Incorrect because* NSAIDs are often used to manage pain and inflammation associated with cyclic mastalgia.
**Option B:** *Incorrect because* Bromocriptine can help reduce prolactin levels, which may contribute to breast pain in some cases.
**Option C:** *Incorrect because* Danazol can help suppress gonadotropin release, leading to a decrease in estrogen levels and alleviating symptoms.

**Clinical Pearl / High-Yield Fact**
When managing cyclic mastalgia, it's essential to consider the patient's menstrual cycle and adjust treatment accordingly. This may involve administering medications at specific times or adjusting dosages to coincide with the onset of symptoms.

**Correct Answer:** C. Tamoxifen