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The characteristic alarm clock headache is a feature of:

 # The characteristic alarm clock headache is a feature of:
A. Auriculotemporal neuralgia
B. Trigeminal neuralgia
C. Sphenopalatine neuralgia
D. Glossopharyngeal neuralgia



The correct answer is C. Sphenopalatine neuralgia.

Sphenopalatine neuralgia / Lower half Headache / Sluder's headache / Horton's syndrome
• Described by Sudian, who concluded the involvement of Vidian nerve. 
• Pain is thought to be generated at the level of pericarotid or cavernous sinus complex. 
• Characterized by unilateral paroxysms of pain in the region of eyes; the maxilla, the ear and mastoid, and beneath the zvaoma. 
• There is no trigger zone. 
• Unfortunately, the attacks develop regularly, usually atleast once a day, over a prolonged period of time. 
• Interestingly in some patients, the onset occurs at exactly the same time of day, because of which it is referred to as alarm clock headache 




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