5-FU injection and topical even in small doses cause both acute central nervous system (CNS) damage and progressively worsening delayed degeneration of the CNS in mice. This latter effect is caused by 5-FU-induced damage to the oligodendrocytes that produce the insulating myelin sheaths.
Home > Sexually transmitted infections > Syphilis > After treatment for syphilis. It is strongly advised that you do not have any sexual intercourse; including vaginal; anal or oral sex until you and your partner(s) have both finished the treatment and any follow-up treatment.
But even if you donât have symptoms, you can still pass it on to your sexual partner. If you think you have it or have been exposed to syphilis, get treated right away. The stages of syphilis are called âprimary,â âsecondary,â âlatent,â and âtertiary (late).â This article deals with the symptoms typical of each stage. Primary Syphilis