**Core Concept**
Satyriasis is a medical term used to describe an excessive or insatiable sexual desire in males. This condition is characterized by an intense and persistent libido, often accompanied by an increased frequency of sexual thoughts, behaviors, and fantasies. Satyriasis is a form of hypersexuality, which can be a symptom of various underlying psychological or neurological disorders.

**Why the Correct Answer is Right**
The correct answer, B. Increased sexual drive in male, accurately describes satyriasis. This condition is often associated with an imbalance of neurotransmitters, such as serotonin and dopamine, which play a crucial role in regulating mood, appetite, and libido. In males with satyriasis, the brain's reward system is overactivated, leading to an intense and persistent desire for sex. This can be seen in conditions such as hypersexuality disorders, paraphilias, and certain personality disorders.

**Why Each Wrong Option is Incorrect**
* **Option A:** Decreased sexual drive in male is actually known as Hypoactive Sexual Desire Disorder (HSDD), which is the opposite of satyriasis.
* **Option C:** Decreased sexual drive in female is also a form of HSDD, which is a distinct condition from satyriasis.
* **Option D:** Increased sexual drive in female is known as Hypersexuality, but it is not a direct equivalent to satyriasis, which specifically refers to an excessive libido in males.

**Clinical Pearl / High-Yield Fact**
It's essential to note that satyriasis can be a symptom of an underlying psychological or neurological disorder, such as hypersexuality disorder, paraphilias, or certain personality disorders. A thorough evaluation and diagnosis are necessary to determine the underlying cause of excessive libido in males.

**✓ Correct Answer: B. Increased sexual drive in male**