What is medically wrong if a vein on the penis becomes tender and overly swollen during an erection? -

This has been going on for a week now. I m sure he ll make an appointment with a urologist today, but until he s seen by a doc, I m hoping someone that has had experience with this can say what to expect. There s virtually no chance of an STD. Please, no frivolous answers.

if circumcised the veins get severed and reconnect, sometimes they just can t handle sex/masturbation in certain ways for long times

It could mean that he is having too much sex. I personally know that if I rub that part of my body either by having sex or masturbation too much it becomes really sore. Usually abstaining for a few days makes it better. If it does persist like in the case you mentioned it is best to see the Doctor.