Scorpions can symbolize death and rebirth.

I find that interesting, considering that this dream is about taking away people's identities. Losing your identity and taking on a new one is like dying and then being born again. Is there a situation in your life where you feel that people around you are losing their identities/maybe changing in a way that makes you uncomfortable?

Are you afraid of losing your identity or an important part of yourself? The paper with the message that disappears can also be a sign of lost identity. - A message is a way you communicate to others. Your identity is partly based on how other people see you and how you express youself to them.

Do you live somewhere where scorpions live? I'm wondering since you checked your bed for them after you woke up.