Lyric discussion by charliestrouse3 

Cover art for The Dark Trail lyrics by Fall of Troy, The

Could be about hallucinogenic mushrooms. The crescent could refer to the tops of the mushrooms if they were cut up to be smoked; And sometimes, when hallucinating, it can feel like your face is melting off and other strange sensations, which may lead to scratching (though i think that line more refers to the crushing and packing before it is smoked). "Scare me if you can, nothing can happen. You stay heavy on my mind, can't escape you if I try, cause I know you're gonna ride." is saying he's not afraid of a bad trip, because he knows it isn't real and he just has to wait it out. "Silenced. Sleeping all day because you know you can't escape the night." refers to the altered state of perception blocking the reality around you. "Regurgitate all your ambitions" ... you often feel sick from the mushrooms. Blue dress would be the stems, and eating the cap would be undressing it.

So it could be about eating/smoking hallucinogenic mushrooms.

I do still believe it is most likely about Oxy though.