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Epidural hemorrhages which is also known as subdural hematoma can occur when there is bleeding inside the skull, but outside the dura membrane, which is the protective layer of tissue that surrounds the brain. Patients with an epidural hematoma can remain conscious with minimal symptoms, can become drowsy, or can progress to a coma immediately following their injury based on the size of their hematoma. (Georgia Brain and Spine, 2022). In addition, epidural hemorrhages result from skull fracture, and most are in the temporoparietal region where a skull fracture crosses the path of the middle cerebral artery. (Martini, 2018)
Another type of traumatic brain injury is a subdural hemorrhage which is also known as subdural hematoma. A subdural hematoma occurs when the bleeding exists inside the dura, but still outside the brain. Blood accumulates between the dura mater and the arachnoid mater. Furthermore, subdural hematomas can either be acute, (occurring and being detected soon after the injury), subacute (symptoms develop days or weeks following the injury) or chronic (symptoms occur weeks to months after the time of the injury). (Georgia Brain and Spine, 2022).
In any case, bleeding caused by intracranial hemorrhages can form a mass that presses on the brain tissue and can lead to a variety of potentially dangerous symptoms. These symptoms include severe headaches, seizures, nausea, vomiting, physical weakness, difficulty with speech, and changes in vision. It is imperative to obtain an urgent evaluation with a neurosurgeon immediately to prevent worsening symptoms or even death.
“Understanding the difference between Epidural and Subdural hematoma.” (2022) https://www.georgiabrainandspine.com/blog/understanding-the-difference-between-epidural-subdural-hematomasLinks to an external site.
Martini, Frederic (2018). “Human Anatomy” Ninth Edition.