Neurodegenerative Diseases USMLE Step 1 Practice Question
A 57-year-old woman presents with recurrent episodes of severe, stabbing pain over the right cheek and jaw lasting seconds, triggered by teeth brushing. Vital signs: BP 128/82, HR 76, RR 14, Temp 37°C, SpO2 98%. Neurologic examination between attacks is completely normal. MRI brain with contrast shows no mass or demyelinating lesions. She denies facial weakness or numbness. Which trigeminal nerve division is most commonly affected in this disorder?
Answer choices
- AMaxillary and mandibular divisionsCorrect answer
- BGlossopharyngeal nerve
- COphthalmic and maxillary divisions only
- DFacial nerve motor root
- EMandibular division only
- FOphthalmic (V1) division only
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