Hi. On my thigh I have what appears to be two small red bites. The bites are surrounded by a red ring, between the red ring and the two small bites, it looks like there is a purple bruise of sorts. (Scratching? I don t know.) I noticed the bite two or three days ago and its still there, just turned purple today. Any idea what kind of bite it could be? Note: The bites come off the skin, not the ring/bruise. There is also another bite just like this one close to it that is a lot smaller. The bite mentioned before this not is about the size of a flattened baseball. The smaller one is like a quarter. The smaller one is also purple with a halo. Thanks.