Which sign is classically associated with an epidural hematoma after head injury?

Which sign is classically associated with an epidural hematoma after head injury?

• A. A lucid interval between injury and neurological deterioration.
• B. A steadily progressive decline from onset.
• C. Chronic daily headache without focal signs.
• D. No clinical signs during the first 24 hours.

Answer: (A)

This question hinges on the classic progression seen with epidural hematoma: an arterial bleed into the space between the skull and dura causes rapid hematoma expansion and rising intracranial pressure. The hallmark sign is a lucid interval—the patient loses consciousness at the moment of injury, briefly recovers and seems normal for a period, then rapidly deteriorates as the hematoma enlarges. This pattern reflects the fast arterial bleed and subsequent mass effect on brain tissue. Other patterns don’t fit as well. A steadily progressive decline from onset suggests a slower process, like some subdural bleeds or contusions. A chronic daily headache without focal signs points away from an acute traumatic hematoma altogether. No clinical signs during the first 24 hours could occur in some injuries, but the distinctive lucid interval followed by rapid decline is the classic teaching for epidural hematoma and prompts urgent imaging and intervention.

This question hinges on the classic progression seen with epidural hematoma: an arterial bleed into the space between the skull and dura causes rapid hematoma expansion and rising intracranial pressure. The hallmark sign is a lucid interval—the patient loses consciousness at the moment of injury, briefly recovers and seems normal for a period, then rapidly deteriorates as the hematoma enlarges. This pattern reflects the fast arterial bleed and subsequent mass effect on brain tissue.

Other patterns don’t fit as well. A steadily progressive decline from onset suggests a slower process, like some subdural bleeds or contusions. A chronic daily headache without focal signs points away from an acute traumatic hematoma altogether. No clinical signs during the first 24 hours could occur in some injuries, but the distinctive lucid interval followed by rapid decline is the classic teaching for epidural hematoma and prompts urgent imaging and intervention.