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.
How long to wait for confirmation of effective syphilis treatment. levi153. Hello. During a routine STD testing (gonorrhea through throat, rectum, and uretha, chlymydia through urine, HIV and syphilis through blood) I tested postive for syphilis (negative for all other tests).