**Core Concept**
Asherman's syndrome is a condition characterized by the presence of intrauterine adhesions, which can lead to a range of symptoms related to menstrual and reproductive health. This condition often results from scarring or adhesions within the uterus, which can be caused by surgical procedures, infections, or other forms of uterine trauma.

**Why the Correct Answer is Right**
Asherman's syndrome typically presents with symptoms such as amenorrhea (absence of menstruation), oligomenorrhea (infrequent menstruation), or menorrhagia (excessive menstrual bleeding). These symptoms can be attributed to the formation of intrauterine adhesions, which can disrupt normal uterine function and lead to hormonal imbalances. The adhesions can also interfere with the implantation of a fertilized egg during pregnancy, making it difficult for women with Asherman's syndrome to conceive.

**Why Each Wrong Option is Incorrect**
* **Option A:** While Asherman's syndrome can lead to infertility, it is not the only symptom. Infertility is a potential consequence, but not the primary symptom.
* **Option B:** Dysmenorrhea (painful menstruation) is not a typical symptom of Asherman's syndrome. However, some women might experience mild cramping due to the adhesions.
* **Option C:** Vaginal bleeding between periods is not a characteristic symptom of Asherman's syndrome. While some women may experience irregular bleeding, it is not a defining feature of the condition.
* **Option D:** Galactorrhea (spontaneous milk production) is not related to Asherman's syndrome. This symptom is more commonly associated with hormonal imbalances, such as those seen in prolactinomas.

**Clinical Pearl / High-Yield Fact**
Asherman's syndrome can be a consequence of uterine surgery, such as dilation and curettage (D&C), and is often associated with a history of uterine trauma or infection. It is essential to consider this condition in the differential diagnosis of infertility and to perform a hysterosalpingogram to confirm the diagnosis.

**Correct Answer:** A.