Hi. My son has a mysterious purple splotchy mark on his forehead, between his eyebrows. He was fine one minute and then emerged from his bedroom a few hours later with this mark. He said he didn t bump the area or hit the area or fall asleep on something, but he did mention laying on his stomach on the bed, with his arms and head over the edge while he used his phone and laptop. Is it possible that blood vessels were broken from having his head hung for so long? Thank you!