<s>[INST] I HAVE PAIN IN THE HEAD OF MY PENIS. I WENT TO MY UROLOGIST AND HE CHECKED MY PROSTATE AND IT WAS OK. Urine sample showed no infection. He came to the conclusion that it can be related to lower back pain and arthritis. Have you ever heard of this.. [/INST] Hi, Thanks for writing in. If your doctor has examined you and found that it is not due to bladder, prostate or urethra infection then certain causes like allergy to soap and hygiene factors need to be assessed. Rough masturbation or sex can also cause such a pain. Your doctor is also right in discussing that lower back pain and arthritis can cause such a condition. Reactive arthritis, formerly called Raters syn Chat Doctor.  </s>