now i think i have skin cancer. i have had this scab on my scalp for almost a year or maybe a couple of months i truly dont remember but i know i have had it for awhile and that it hasn't gone away. i will admit i do pick at it. i asked someone i know who has hypochondria and they said that picking at it makes it last longer. could this be why it's still here? should i stop picking at it? any advice would be helpful. thank you