About a week ago I had this bump appear out of nowhere on my leg. At first I didn't think anything of it until it started to itch. Well when I scratched it a scab came off. (Keep in mind that this bump wasn't like a mosquito bite bump it isn't really even much of a bump. I just don't know what else to call it. There like raised skin with a scab on them. They're also spread around different areas. Not together.) A new one appeared and I just let it go. Well yesterday I looked at my legs carefully and now I have 8 of them. I notice one or two more a few days ago but again I paid no attention to it. I would really like to know what it is and make sure it's nothing serious. Can anybody help me??