RT Journal Article SR Electronic T1 Tabes dorsalis progressing to general paresis after 20 years despite routine penicillin therapy. JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 368 OP 371 DO 10.1136/sti.56.6.368 VO 56 IS 6 A1 Giles, A J YR 1980 UL http://sti.bmj.com/content/56/6/368.abstract AB A man with a history of treatment for early syphilis presented with tabes dorsalis. Despite receiving a course of penicillin accepted as adequate by the World Health Organisation the illness progressed to tabo-paresis after 20 years. Reinfection cannot be excluded.