In this episode the focus is on cerebral vasculitis and its different forms. The episode explores primary angiitis of the central nervous system (PACNS) characterized by inflammation limited to the CNS, and secondary cerebral vasculitis associated with systemic vasculitides, rheumatic diseases, infections, malignancy, and medication. Moreoever, the episode discusses the diagnosis, treatment, and aftercare for cerebral vasculitis, as well as two related conditions: reversible cerebral vasoconstriction syndrome (RCVS) and intracranial atherosclerotic disease (ICAD).