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Secondary Headache
Any headache that's not caused by primary HA (tension, migraine, cluster) syndrome.
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Secondary Headache
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Diagnosis
Brain Tumor
Blood In Or Around Brain
Brain Infections & Other Inflammatory Processes
Brain Vascular Lesions/Process
Concussion
Chronic Daily Headache
Idiopathic Intracranial Hypertension (Pseudotumor Cerebri)
Rebound Headache
Carbon Monoxide Poisoning
Chronic Or Acute Sinusitis
Eye Strain
Acute Angle Closure Glaucoma
Obstructive Sleep Apnea (OSA)
Temporomandibular Joint D/O (TMJ)
Other