Mycobacterium<unk> is of the meninges is the cardinal feature and the inflammation is concentrated towards the base of the brain. When the inflammation is in the brain stem subarachnoid area, cranial nerve roots may be affected. The symptoms will mimic those of space-occupying lesions. Blood-borne spread certainly occurs, presumably by crossing the blood–brain barrier; but a proportion of patients may get TB meningitis from rupture of a cortical focus in the brain; an even smaller proportion get it from rupture of a bony focus in the spine.
Tuberculous meningitis
Fungal meningitis
Drug-induced aseptic meningitis
Aseptic meningitis
Herpesviral meningitis
Viral meningitis
Granulomatous meningoencephalitis
Herpesviral encephalitis