Pinpoint pupils are seen in haemorrhage of
Correct Answer: Pons
Description: In pontine haemorrhages, deep coma with quadriplegia often occurs over a few minutes. Typically, there is prominent decerebrate rigidity and "pinpoint" (1 mm) pupils that react to light. There is impairment of reflex horizontal eye movements evoked by head turning (doll's-head or oculocephalic maneuver) or by irrigation of the ears with ice waterHyperpnea, severe hypeension and hyperhidrosis are commonRef: Harrison 19e pg: 2583
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