Good day! I have this black-ish "pimple" for around 5 years now. It does not hurt at all even when popped. Nothing came out (puss,etc), just a few blood. After that, it would just go back to its original form. It does not grow at all too, just the same size and color through the years. I went to a dermatologist and she did not give an exact diagnosis, she just gave me her expensive moisturizer and all . I use Cetaphil moisturizer and a carrot soap by the way if that helps. Here's how it looks like:
Please help! Thank you everyone!