From APLS manual 6E

1. Abnormal oculocephalic reflexes (avoid in patients with neck injuries):
   When the head is turned to the left or right a normal response is for the eyes to move away from the head movement; an abnormal response is no (or random) movement. See video for a demo of normal reflexes.
2. Abnormal Posture:
   Decorticate (flexed arms, extended legs)
   Decerebrate (extended arms, extended legs)
   Posturing may need to be elicited by a painful stimulus
3. Abnormal pupillary responses: unilateral or bilateral dilatation suggests raised ICP
4. Abnormal breathing patterns: There are several recognisable breathing pattern abnormalities in raised ICP. However they are often changeable and may vary from hyperventilation to Cheyne-Stokes breathing to apnoea
5. Cushing’s Triad: Hypertension, Bradycardia and breathing pattern abnormalities are a late sign of raised ICP