Does anyone know what my dream means?

Okay so in my room all my walls are covered in posters (relevant i promise!) espesially the wall by my door.
in my dream someone was showing me the posters in my room and all the posters turned into the same guy but in different poses. but they all had him showing his forearms but they were slashed and covered in really deep cuts and bleeding really bad. the person who was showing mt told me he had "taken his own life the year before"
then i looked down and my hands were covered in blood but it wasn't from any of my cuts it was coming off the walls from the posters.

When i woke up my arm was tingling where my old faded scars were.
any clue to what this dream means? it's been brothering me all day!