Over the past month, Andy has noticed that touching his upper lip, even during eating or drinking, produces intense pain in the area extending from the upper lip to just

Over the past month, Andy has noticed that touching his upper lip, even during eating or drinking, produces intense pain in the area extending from the upper lip to just below his right eye. s ability to chew and swallow is not affected. Andy’s dentist told him it was not a dental problem and he should see his physician. The physician explained that the condition might be temporary and that the cause is unknown. Explain what cranial nerve is responsible for these symptoms.