Last reviewed: 4 Feb 2021
Last updated: 21 Jan 2020
Summary
Differentials
Common
- Tension headache
- Migraine
- Acute sinusitis
- Otitis media
- Menstrual headache
- Medication withdrawal
- Medication overuse
- Cervical paraspinal muscle tenderness
- Dental caries/wisdom tooth impaction
- Temporomandibular joint syndrome (TMJ)
- Acute hydrocephalus
Uncommon
- Benign intracranial hypertension (pseudotumor cerebri)
- Brain tumor
- Hypertensive encephalopathy
- Eclampsia/preeclampsia
- Pituitary apoplexy
- Venous sinus thrombosis
- Epidural hematoma
- Subarachnoid hemorrhage (SAH)
- Subdural hematoma
- Meningitis
- Brain abscess
- Carbon monoxide poisoning
- Concussive syndrome/trauma
- Acute mountain sickness/hypoxia
- Cluster headaches
- Paroxysmal hemicrania
- Trigeminal neuralgia
- Acute angle-closure glaucoma
- Giant cell arteritis
- Zika virus infection
- Chikungunya
- Dengue fever
- Stroke
Contributors
Authors
Associate Director
Department of Emergency Medicine
Saint Lukes Cornwall Hospital
Newburgh
NY
Disclosures
MTN declares that she has no competing interests.
Peer reviewers
Director
Department of Emergency Medicine
Mount Sinai School of Medicine
New York
NY
Disclosures
PH declares that he has no competing interests.
Chairman
Department of Emergency Medicine
Mount Sinai School of Medicine
New York
NY
Disclosures
SJ declares that he has no competing interests.
Senior Neurosurgeon
Oslo University Hospital
Professor
University of Oslo
Oslo
Norway
Disclosures
EH declares that he has no competing interests.
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