acute
Subdural haematoma
A subdural hematoma (SDH) is a type of bleeding in which a collection of blood—usually but not always associated with a traumatic brain injury—gathers between the inner layer of the dura mater and the arachnoid mater of the meninges surrounding the brain. It usually results from rips in bridging veins that cross the subdural space.
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Causes — why it happens
- ·Head injury, alcohol use disorder, reduction in cerebrospinal fluid pressure
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