General
     Migraine (complicated)
     Tension headache
     Cluster headache
     Caffeine or analgesic withdrawal
     Hypertension
     Depression

Infectious
     Sinusitis
     Meningitis
     Encephalitis

Neurologic
     Partial seizure
     Pseudotumor cerebri
     Trigeminal neuralgia

Vascular
     Subarachnoid hemorrhage
     Subdural hematoma     
     Intracranial venous thrombosis
     Temporal arteritis
     CNS vasculitis

Neoplastic
     Intracranial neoplasm

Workup
     CBC
     ESR
     CT-head
     MRI-brain
     LP

Content on this page has not been checked for accuracy. The author's credentials have not been confirmed. Always use multiple peer-reviewed scholarly sources and good clinical judgement in your decision making.

The Compendium platform was created by David Kwinter, MD, CCFP(EM).