**Core Concept**
Herpes zoster infection of the geniculate ganglion leads to Ramsay Hunt syndrome type 2, a condition characterized by facial paralysis, ear pain, and vesicular eruptions in the external auditory meatus.

**Why the Correct Answer is Right**
The geniculate ganglion is a collection of sensory neurons in the facial nerve (cranial nerve VII) that transmit taste from the anterior two-thirds of the tongue. When infected with varicella-zoster virus, these neurons become inflamed and cause facial paralysis, ear pain, and vesicular eruptions. The facial nerve is responsible for controlling the muscles of facial expression, and its paralysis results in weakness or drooping of the face.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the condition described. Herpes zoster in the geniculate ganglion does not cause a condition known as "Bell's palsy."
* **Option B:** While herpes zoster can cause pain, this option does not specifically relate to the condition described. The pain associated with Ramsay Hunt syndrome type 2 is typically severe and localized to the ear.
* **Option C:** This option is incorrect because it describes a different condition altogether. Herpes zoster in the geniculate ganglion does not cause "trigeminal neuralgia."

**Clinical Pearl / High-Yield Fact**
Ramsay Hunt syndrome type 2 is a classic example of a "cranial neuropathy" caused by herpes zoster infection. It is essential to recognize the characteristic symptoms and signs of this condition to make an accurate diagnosis.

**Correct Answer: C. Trigeminal neuralgia**