Final answer:
An epidural hematoma is a traumatic brain injury where blood collects between the skull and dura mater, typically caused by a head injury that results in arterial rupture. This leads to increased pressure on the brain, creating severe symptoms that can progress rapidly without treatment. It shares common features with hemorrhagic strokes, such as edema and compromised blood flow.
Step-by-step explanation:
Characteristics of an Epidural Hematoma
Epidural hematoma is a type of traumatic brain injury where blood accumulates between the skull and the outer covering of the brain (dura mater). This condition often results from vascular injury during a skull fracture, which may occur after a strong blow to the side of the head, such as at the pterion. This can cause a major artery to rupture, leading to blood collection within the cranial vault. The accumulation of blood creates pressure on the brain tissue, potentially causing neurological deficits and, if left untreated, can rapidly escalate to exert life-threatening pressure.
Hemorrhagic strokes and epidural hematomas share the common feature of bleeding within the cranial vault; however, their pathophysiology differs. Both conditions can lead to increased intracranial pressure, edema, compromised blood flow, damage to the blood-brain barrier, loss of brain function, and potentially death. Symptoms of an epidural hematoma may not be evident immediately but can progress severely within hours.