Characteristically, M tuberculosis causes a basilar meningitis that results in 3 complications: Hydrocephalus due to obstruction of the foramina of Luschka and Magendie or the aqueduct of Sylvius Vasculitis, sometimes causing arterial or venous occlusion and stroke Cranial nerve deficits, particularly of the 2nd, 7th, and 8th cranial nerves Diagnosis of tuberculous meningitis may be difficult.