قالب:Epidural vs. subdural hematoma

نوع النزف	فوق الجافية	Subdural
المكان	Between the skull and the dura	Between the dura and the arachnoid
Involved vessel	Temperoparietal locus (most likely) - Middle meningeal artery Frontal locus - anterior ethmoidal artery Occipital locus - transverse or sigmoid sinuses Vertex locus - superior sagittal sinus	Bridging veins
Symptoms	Lucid interval followed by unconsciousness	Gradually increasing headache and confusion
Appearance on CT	Biconvex lens	Crescent-shaped