Yo, sooo I am part of another forum that has the same issue. Unfortunately none of us have found a cure. It usually gets triggered when I receive aggressive oral, last anywhere from a few weeks to months. I get pea size lump on the left side of meatus, sometimes the right swells up. It burns when I pee and ejaculate, also noticed that my sphincter burns a bit too. No stds, tried every antibiotic, every anti fungal, have seen urologist and had a camera shoved up there, prostate and bladder are healthy, seen dermatologists. Tried switching my diet, the last attempt is going to do a full body cleanse and fasting, as well as trying to talk to a world renown urologist hopefully at end of month. The closest thing that I have found in symptoms is a paraurethral duct infection but that is usually caused by a gonorea. Got an ultrasound and still nothing comes up. Best of luck will post more about my upcoming visit with urologist. Keep me updated. Also, do you vape at all? Second any injury to penis or scrotum or anus?