The bacteria Treponema pallidum that causes syphilis results in locomotor ataxia and tabes dorsalis. The parenchymal syphilis, presents as tabes dorsalis and general paresis. Left untreated, tabes dorsalis can lead to paralysis, dementia, and blindness. His work included the study of tabes dorsalis and alcoholism. The incidence of tabes dorsalis is rising, in part due to co-associated HIV infection . Some conditions, such as tabes dorsalis appear predominantly in males and begin in midlife. Neurosyphilis at this point can cause several damages to the body, including tabes dorsalis. Ranger Dana Tabes is a park ranger. They first meet her in "Ranger Tabes" where she helps them locate a missing package. "Tabes dorsalgia" is a related lancinating back pain.