Dear doctor, I ve been a chronic masturbator for the last 10 years and my uncircumcised penis has suffered from it due to never using lube. The whole penis is darker in colour to the rest of my body and it has especially dark patches too. In addition, I m not getting anywhere near the sensation I originally felt, it seems to have acquired wrinkles at the tip and I hardly get any spontaneous erections. I ve been attempting, no porn, masturbation or orgasm since November but the problem hasn t seemed to get better. What can I do to alleviate/cure my issue and should I contact a urologist or dermatologist?