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50521 Medicine

45-year-old man presents with a daily headache. He describes two attacks per day over the past 3 weeks. Each attack lasts about an hour and awakens the patient from sleep. The patient has noted associated tearing and reddening of his right eye as well as nasal stuffiness. The pain is deep, excruciating, and limited to the right side of the head. The neurologic examination is nonfocal. The most likely diagnosis of this patient’s headache is

Amigraine headache
Bcluster headache
Ctension headache
Dbrain tumor
Medicine
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