Disease/Pathophysiology Epidemiology Signs and Symptoms ...
-Cortical spreading depression - decrease in blood flow begins occipitally 
vasoconstriction (aura) ..... -Can be caused by HSV, Lyme disease, sarcoidosis.							
-Cortical spreading depression - decrease in blood flow begins occipitally 
vasoconstriction (aura) ..... -Can be caused by HSV, Lyme disease, sarcoidosis.