Diagnosed as NSU and over next three months it kept recurring despite abstaining from sex and being treated with Azithromycin 1 dose, Doxycycline 1 week, Erythromycin + Metronidazole 1 week, and lastly Azithromycin again for 5 days. My wife was treated with Azitheromycin large single dose
and then 4 days. All tests to isolate organism were negative. I was told to stop looking so closely and it, at last, cleared in January.