Circulatory shock [top]

  • Sudden loss of cardiac output
  • Loss of consciousness, seizure

Extradural haematoma [top]

  • Acute or subacute neurological deficit subacute neurological deficit acute neurological deficit
  • Classical history is of head injury, particularly to the temple followed by 'lucid interval' then worsening
  • Acute headache, can cause loss of consciousness

Cerebellar stroke [top]

  • Sudden onset of vertigo, headache acute headache, vomiting and ataxia
  • May be complicated by loss of consciousness, brainstem signs or hydrocephalus

Subarachnoid haemorrhage [top]

  • Acute headache, very sudden onset 'like being kicked in the back of the head'
  • May be drowsy / unconscious loss of consciousness, vomiting
  • Signs of meningism:neck stiffness, photophobia
  • Acute neurological deficit

Episodic heart block [top]

  • Palpitations
  • Bradycardia
  • Loss of consciousness
  • Missed beats