Hlo..I got treated for syphilis last year June .got 3 penicillin shots .csf vdrl was non reactive ..at the time of treatment my titer wa 1:16..it constantly reduced to 1:4 then ,1:2 in October 2023..20 days back I again tested vdrl and titer went 1:4 .I got panic and consulted Dr ,he gave me doxy 100 for 14 days bcoz i was apprehensive about treatment failure or reinfection..after taking doxy 100 after 20 days I again tested vdrl and surprised that it showed 1:16..I m so panic nd couldn't understand why titers has risen so abruptly nd high ...plz recommend