Please help me

18 year old Virgin and randomly i woke up with this on my penis what is it!??!??? please help

have you been masturbating without lube
even rubbing yourself on the bed

Yes I have, but it’s been like around 3 weeks with this freaking out now any ideas what it could be?

it look like a rub burn
did it start out as a red mark?

When its wet it gets shiny and when its not it gets dry and flakes up, it started off exactly like the picture it just changes when wet to a shiny mark

the only other it could be is a dermatitis
do you get dandruff.

No i don’t get dandruff, any ideas on next steps?