What is one common symptom of trigeminal neuralgia?

The correct symptom of trigeminal neuralgia is numbness in the face. This condition, characterized by sudden and severe facial pain, typically affects the trigeminal nerve, which is responsible for sensation in the face. Patients often experience sharp, shooting pain in response to light touch or activities like chewing or speaking, but numbness may also be reported in the affected areas, providing a distinct symptom related to the nerve's dysfunction.

The other options do not accurately reflect the symptoms commonly associated with trigeminal neuralgia. Persistent headaches could be associated with many other conditions but are not a hallmark of this specific neuralgia. Inability to swallow, while it may occur in various medical conditions, is not typical for trigeminal neuralgia. Swelling in the jaw can also relate to various dental or systemic issues, but it is not a common symptom of this neurological condition.