0 the delicate covering of the brain or spinal cord: --
Symptoms associated with an arachnoid cyst can include headaches, nausea, seizures, and visual disturbances.
However, with treatment most individuals with symptomatic arachnoid cysts do well.
In practice, diagnosis of symptomatic arachnoid cysts requires symptoms to be present, and many with the disorder never develop symptoms.
Intracranial arachnoid cysts usually occur adjacent to the arachnoidal cistern.
In subdural hematoma, bleeding occurs between the dura and the arachnoid mater.
The arachnoid and pia mater are sometimes considered as a single structure, the leptomeninx, or the plural version, leptomeninges.
The space between the dura and the arachnoid (in both head and spine), the subdural space, is also a potential space.
It originates from the arachnoid (not the dura), the tissue covering the brain and spinal cord lying deep to the dura.
The space between the arachnoid and the underlying pia mater is called the subarachnoid space.
