Trigeminal Nerve

Which of the following statements correctly describes the sensory innervation pattern of the trigeminal nerve divisions to the face?

Which is the most common division of the trigeminal nerve affected in trigeminal neuralgia?

Regarding the trigeminal nerve (CN V) and its branches, all of the following statements are correct EXCEPT:

A 52-year-old woman presents with right-sided facial pain affecting the maxillary division. MRI shows a mass compressing the trigeminal nerve at the foramen rotundum. Which finding would best distinguish this from idiopathic trigeminal neuralgia?

A 52-year-old man from Delhi presents to the neurology clinic with a 3-month history of severe, lancinating pain in the right cheek and upper jaw. The pain is triggered by chewing, touching the face, or cold wind, and lasts 10–30 seconds per episode. Neurological examination is normal; there is no sensory loss or motor weakness. MRI brain with contrast is unremarkable. What is the most likely diagnosis?