Hi! I'm 19 and for the past 3-4 years 2-3 times a year a curved, dark red vessel appears on my penis glans, it's very slightly raised above the glans' surface(maybe half a millimeter) and it doesn't hurt or itch. Funny thing is it goes away after a few days and when it ALWAYS re-appears in EXACTLY the same form as it was the last time, it started appearing before my sexual intercourses. I realized it tends to appear when I stretch my foreskin a lot since I've got a slight case of phimosis. I'm just wondering if this is anything serious or should I just let it be? It always disappears after a few days and doesn't come back for months and months.

 

Thank you!