ABSTRACT
Acute (minutes to hours) Vascular source Subacute (days to weeks) Inflammation, infection or metabolic
source Chronic (months to years) Neurodegeneration or neoplastic source
PAST MEDICAL HISTORY
• Aside from taking a full history of previous medical conditions, several points may be significant:
• Migraine can occur at any age, but very commonly patients had a headache as a teenager that was migrainous.
