LESIONS OF THE SECONDARY PERIOD
(1) INTERSTITIAL ENCEPHALITIS OR MYELITIS
(“meningitis”)
(2) PARENCHYMATOUS ENCEPHALITIS OR MYELITIS
(“encephalitis,” “myelitis”)
LESIONS OF THE TERTIARY PERIOD
(1) CHRONIC INTERSTITIAL ENCEPHALITIS OR MYELITIS
(“gummatous meningitis”)
(2) CHRONIC PARENCHYMATOUS ENCEPHALITIS
(“dementia paralytica”)