Unless you live next to a large electrical docking station and if so..they cause all kinds of problems.
I'm sorry but it seems you have a demon attacking you..that's what it is.. end of story please dont think people are trying to scare you that is not so.. just get the right kind of help before it gets worse bc I promise it will..I hope you believe in god.
I get the same thing, and have been wondering what in the world it is. I don't believe the doc is correct in his 'demograph..." There's nothing "allergic" about the scratches I get, and there's never any itch to them. They appear (so far, I've only seen them on the top of my feet and around my ankle area). I currently have no animals and, like you, find no external cause for them. The skin actually becomes painful while they're there. As suddenly as they appear they disappear. One night there are 5-6 of them on the top of my foot and when I wake up they're gone. They usually remain for 1-2 days.
I just wanted to let you know you're not the only one to be experiencing this very peculiar scratch thing. ;)
Just a quick note to say hi!