Final answer:
In subdural hemorrhage, blood accumulates between the brain and skull due to vascular damage, often caused by a head injury, leading to increased intracranial pressure and potential fatality if not promptly treated. Hemorrhagic strokes like this can lead to brain function loss and require immediate medical attention, potentially including surgery.
Step-by-step explanation:
When considering subdural hemorrhage, it is crucial to understand that this condition involves the accumulation of blood between the brain and the inner layers of the skull, which can put harmful pressure on the brain tissue. A blow to the pterion, an area on the lateral side of the skull, can fracture the bones and potentially damage a major artery underneath, leading to bleeding and the formation of a hematoma. This scenario is particularly dangerous because symptoms might not appear immediately, and without timely treatment, the pressure increase from the hematoma can lead to death within a few hours.
Hemorrhagic strokes, including subdural hemorrhage, result from ruptured arteries in the brain, which deprive brain tissues of blood and contribute to the loss of brain function, potentially resulting in fatal outcomes. The ensuing edema, or swelling due to fluid accumulation, can worsen the situation by further breaking down the blood-brain barrier and increasing intracranial pressure. In severe cases, surgery may be needed to relieve this pressure. Understanding the anatomical and physiological effects of a subdural hemorrhage is pivotal for effective diagnosis and intervention.