I accidentally got Ketoconazole shampoo 2% on the tip of my penis when treating a rash on the scrotum. This caused an immediate burning inside the penis. I thought this would go away over time, but after two weeks it continued to get worse so I went to the Doctor. Because of the burning when urinating the Doctor perscribed Ciprofloxican for prostitis, even though the urine specimen did not show infection. After finishing 10 days of the antibiotics the burning did get some better, but then started to come back, and now it is worse than before, and now burns all the time, not only when urinating. What do you think is going on?