Treatment is first with many different high-dose steroids, namely glucocorticoids. Then, if symptoms do not improve additional immunosuppression such as cyclophosphamide are added to decrease the immune system's attack on the body's own tissues.<unk>  is a very rare condition that is difficult to diagnose, and as a result there are significant variations in the way it is diagnosed and treated.
Cerebral vasculitis
Infectious intracranial aneurysm
Cerebral atherosclerosis
Meningism
Giant cell arteritis
Cerebral amyloid angiopathy
Intracranial aneurysm
Cerebral vasospasm