“…Generally, saSDH is caused by trauma, but other conditions such as aneurysms, AVMs, coagulopathies, meningiomas, or other malignancies have also been reported to contribute to the development of saSDH. The clinical presentation of saSDH varies, ranging from asymptomatic to hemiparesis, persistent headache, seizures, symptoms of increased intracranial pressure, to decreased consciousness depending on the amount of bleeding and the degree of complications that occur [ 9 , 10 ]. On a CT scan, the density of SDH changes over time as the blood breaks down and changes from a viscous coagulum to a low-viscosity fluid.…”