(Clinical Imaging)

Overview

• Bleeding between the skull and the dura mater
• M>F (4:1), most common in 20-30 yrs old
• Most cases are traumatic, resulting from head injury
• Most commonly arterial bleed → rupture of the middle meningeal artery
• Pterion common site of rupture → thinnest part of skull where the middle meningeal artery lies
• Extradural vs Subdural vs Subarachnoid

Making Diagnosis

Clinical Features:

• Classic Presentation ⇒ inital loss of consciousness following head injury → temporary recovery of consciousness with return to normal neurological function (lucid interval) → neurological status declines again due to haematoma expansion
• Contralateral focal neurological deficits
• Signs of raised ICP → headache, confusion (decreased GCS)
• Compression of Occulomotor Nerve (CN3) → Fixed, dilated pupils

<aside> 💡 Present with sudden onset soon after the injury, following a brief lucid interval.

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