What is arachnoid subdural hematoma?

An arachnoid subdural hematoma is a type of bleeding that occurs between the arachnoid membrane and the dura mater, two layers of the protective membranes surrounding the brain. This condition typically arises from trauma or injury, leading to the accumulation of blood in this space, which can cause pressure on the brain. Symptoms may include headache, confusion, or neurological deficits, and treatment often involves monitoring or surgical intervention to alleviate pressure. It is distinct from other types of hematomas, such as epidural or subdural hematomas, due to its specific location and causes.