A true medical emergency
Can cause coma and death over hours
Encephalopathy from hypertension is more likely reversible than hypertension from other causes (e.g. hypertensive stroke)
Mgmt
Avoid overzealous blood pressure lowering is particularly critical for patients with strokes
Lab analysis can be important in identifying etiology in
Pediatric patients
Renal/renovascular disease
Pheochromocytoma
Pregnant patients
HELLP syndrome