Hello, I am a 18 year old male who at the current time has no real sexual activity apart from masturbation, I noticed this lump a few months ago and in turn thought nothing of it, just thinking it was a vein. From the image, I cannot tell if it it's either Sclerosing Lymphangitis or something else. Within the red circle of the picture it is like a lump but not hard, I can easily push down upon it and nothing will happen. It seems to stick out and it is 'bulging' so to speak. When I'm not erect I can barely feel it but when I am erect I can feel it as a hard lump. So, is it a vein or something else?
Also! I cannot really move it, or I can't feel it being moved. It is underneath the actual skin and when I try to move it seems that it moves very lightly or doesn't move at all.