“…However, the associated morbidity and mortality have decreased substantially [ 29 ]. Various organisms, e.g., viruses [ [39] , [40] , [41] , [42] , [43] , [44] , [45] , [46] , [47] , [48] , [49] ], tubercular [ 50 , 51 ], bacteria [ [52] , [53] , [54] , [55] , [56] , [57] , [58] , [59] ], protozoa and other parasitic infections [ [60] , [61] , [62] , [63] ] have led to the development of CVT. Infection, when considered to be a direct cause of CVT, can spread from structures either adjacent to dura matter (e.g., paranasal sinuses, nose, mastoid and orbit) or from a distant locus.…”