<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi my age Is 27 and I am doing masturbation from last seven years, for starting two year once in a day and after this twice a week to till date, in last three year I notice that my penis get bend to left side when it is fully erect and after masturbation I feel pain on left side of penis for about minimum ten hours, so please tell Me why all this happen and what step to be taken  <response>: Hi and thank you so much for trusting us with your heath query. I am so sorry to hear about this bent penis when fully erected. The most common cause of this is fibrosis of the erectile tissue. This leads to a disease called Verona disease. You would need to consult a urologist for evaluation and treatment. If it is confirmed, an initial trial of Vitamin that may be followed by surgical correction if no improvement is noted. I hope you find this helpful. I wish you well. Thank you so much for using our services, and please do feel free to ask for clarifications or more information if need be. 