u/Bruhmoment25017

It’s roughly the size of a bad pimple, on the left side of my right knee. I’ve had it since before I can remember. Sometimes I get the urge to pick it and when I do it just bleeds and doesn’t go away. I get the top black pimple off but then it’s black underneath of it. I have not been diagnosed with anything, no medication, I’ve had the spot before I’ve ever drank alcohol or smoked. It doesn’t look like any melanoma pictures I’ve seen. Just maybe want some help identifying what it is. Thanks