68. A 40-year old man presents with presents with a 5-week h…
68. A 40-year old man presents with presents with a 5-week history of recurrent headaches that awaken him during the night. The pain is severe, lasts about 1 hour, and is located behind his left eye. Additional symptoms include lacrimation and nasal discharge. His physical examination is within in normal limits. This clinical presentation is most consistent with:
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