I have been suffering from urethritis for about 5 years. Antibiotics did not resolve it. It is causing serious sleep deprivation on occasions as I need to urinate maybe 6 times during the night. I suspect that eating chilli may have been a cause, so I will stop eating chilli. Recently I was prescribed dexamphetamine for ADD, and it seems to me that this exacerbates the problem. If I reduce the dose, the urethritis is not so severe. Is this coincidental, or can this medication irritate the urethra ? I have always experienced a burning sensation when I need to urinate, but in recent years this has begun happening on a much faster cycle ( I have been tested for STI, results were negative).