**Core Concept**
Hypersexuality or excessive sexual desire in females is a complex condition that can be influenced by various factors, including hormonal imbalances, neurological disorders, and psychological factors. This condition can manifest as an increased libido, compulsive sexual behavior, or a combination of both.

**Why the Correct Answer is Right**
The correct answer is related to Hypoestrogenism. Estrogen plays a crucial role in regulating sexual desire in females. A decrease in estrogen levels can lead to an increase in sexual desire. This is because estrogen receptors are present in the hypothalamus, which is responsible for regulating sexual behavior. Decreased estrogen levels can lead to an imbalance in the hypothalamic-pituitary-gonadal axis, resulting in increased libido. Additionally, hypoestrogenism can be caused by conditions such as premature ovarian failure, ovarian surgery, or certain medications.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Hyperprolactinemia is associated with decreased libido, not increased libido. Elevated prolactin levels can suppress gonadotropin secretion, leading to decreased estrogen levels and decreased libido.

**Option B:** This option is incorrect because Anorgasmia is a condition characterized by difficulty or inability to achieve orgasm, not excessive sexual desire.

**Option C:** This option is incorrect because Hypoandrogenism is a condition characterized by decreased androgen levels, which can lead to decreased libido, not increased libido.

**Option D:** This option is incorrect because Hyperthyroidism can lead to decreased libido due to the metabolic effects of excess thyroid hormones.

**Clinical Pearl / High-Yield Fact**
It's essential to note that hypersexuality can be a symptom of underlying medical conditions, such as hypoestrogenism, and should not be dismissed as a psychological issue alone. A thorough medical evaluation is necessary to determine the underlying cause of excessive sexual desire in females.

**Correct Answer:** D. Hyperthyroidism