This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
[{'content': 'The etiology of anterior ethmoidal neuralgia is: \nSelect and explain. \nA. Inferior turbinate pressing on the nasal septum, B. Middle turbinate pressing on the nasal septum, C. Superior turbinate pressing on the nasal septum, D. Causing obstruction of sphenoid opening', 'role': 'user'}, {'content': "Answer: B \nExplanation: Sluder's neuralgia or the anterior ethmoidal syndrome is pain around the bridge of the nose radiating into the forehead. It is said to originate from the middle turbinate (pa of ethmoid bone) pressing on the deted septum. This is a rare cause of headache and also k/a contact point headache.", 'role': 'assistant'}]