Male genital problem

Patient: Hii doctor, couple of days back i saw a red spot on the head of the penis seems like to be a rash but no pain at all but slightly itchy.The rash happened on a vein which is blue in colour and i realise that the vein is bulging out all the time even in its original shape .it might be because of i jerk off like 2-3times a day..i don’t know wat is it plzz tell me …

Symptoms: Red spot on the tip of the penis leading to a vein .

Doctor: