Brief Answer: Hello Detailed Answer: Welcome to XXXXXXX It can be trigeminal nerve.Your symptoms arise suspicion of trigeminal neuralgia. Ideal way to know cause of the pain would be to get a latest MRI done. A clinical evaluation can also help confirm the diagnosis. Once diagnosis is confirmed treatment can be planned.Most cases are treated with medications and few need surgery. So see a neurologist and get clinical evaluation done. Please ask if there are doubts.Regards.