What has been tied for this condition so far ?
E.coli infection would be common cause....
It may be caused by STDs such as chlamydia or gonorrhea ...I imagine these have been considered and ruled out....
Ureaplasma is an atypical infection that may be a cause of specific inflammation of the urethra...that would usually respond to a course of Doxycycline...
Symptoms of burning with urination may be helped by over the counter AZO....
How long have had this condition?
Do you have other medical problems such as diabetes ?
Any history of STDs ?
Do you have any other information that you feel may be helpful ?
Let me know if you have further questions or concerns
I will be happy to get back with you
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Thank you and Best Regards,
Anthony Bray MD