Diagnostic Considerations
In addition to the conditions listed in the differential diagnosis, other problems than cluster headache (CH) to be considered include the following:
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Acute hypertension (including response to pressors, pheochromocytoma, and preeclampsia)
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Allergen exposure
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Arteriovenous malformations
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Brainstem syndromes
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Cerebral venous thrombosis [14]
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Connective tissue disorder (eg, systemic lupus erythematosus)
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Cyclical migraine
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Eye disorders (eg, acute optic neuritis and acute glaucoma)
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Hemicrania (continual or paroxysmal)
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Ice-pick headaches
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Intracranial neoplasm
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Intracranial trauma
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Interior carotid artery dissection
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Intermittent hydrocephalus
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Metastatic lung carcinoma
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Nasopharyngeal carcinoma
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Malignant and nonmalignant pain syndromes
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Medication adverse effect
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Pituitary tumors
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Raeder paratrigeminal syndrome
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Sleep apnea headache
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SUNA (short-lasting unilateral neuralgiform headache attacks with cranial autonomic symptoms)
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SUNCT (short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing)
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Vertebral artery aneurysm
Differential Diagnoses
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Headache: Pediatric Perspective
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Herpes Zoster
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Cluster headache: Functional imaging shows activation of specific brain areas during pain. Courtesy of Wikipedia Commons.
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Cluster headache (CH): Voxel-based morphometry (VBM) structural imaging shows specific brain area of CH patients' (hypothalamus) being different to non-CH patients' brains. Courtesy of Wikipedia Commons.
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Non-rebreather oxygen mask with reservoir for the acute treatment of cluster headache. Courtesy of Wikipedia Commons.