<unk>  is caused by demyelination by advanced syphilis infection (tertiary syphilis), when the primary infection by the causative spirochete bacterium, Treponema pallidum, is left untreated for an extended period of time (past the point of blood infection by the organism). The spirochete invades large myelinated fibers, leading to the involvement of the dorsal column medial leminiscus pathway rather than the spinothalamic tract.
Tabes dorsalis
Cimex hemipterus
Osteopathia striata
Commotio cordis
Diastematomyelia
Phaedra complex
Morsicatio buccarum
Jugular foramen syndrome