My 7 year old son has been experiencing mild stinging when urinating. I have taken him to the doctor several time over the last 6 months for this issue. they have tested him for a UTI each time and it has always been negative, even the culture they sent out. This is the only symptom he has had. The doctor has diagnosed him with urethritis each time and told me to have him drink more water. Tonight after using the bathroom he started crying and said the tip hurt really bad, but the pain resided after a moment. I plan on taking him back to the doctor tomorrow, but in the meantime I am just trying to get some ideas of what else could be causing this. Does urethritis typically last for 6+ months? It seems unusual to me.