Recently somebody pointed out the purple mark on my lower back, im just getting a little worried now as it was noticed a couple days ago and hasn't gone away. Im not really sure how to explain it but its a purple colour and almost looks like a bite I guess you could say.. its painless, and no pain when it is touched. Its about half the size of a finger.. the area around it is purple as well. Any suggestions and thought would be great! Thank you!