<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi, I had a red lump on the side of my breast, it was quite painfull when I pressed it. So I squeezed it and it turned to a purple colour, a bit of what I thought was pus came out and a lot of blood afterwards, everytime I squeezed it more blood came out. I have no idea what it is , but its still there.  <response>: Hi! dont worry this is related to skin only and the breast tissue proper is not affected at all! This is very common and people get very concerned about such bloody nodules; I consider some possibilities in such cases as I have seen so many biopsies of such pathology; possibilities are:1. A small infected inclusion cyst or folliculitis2. A small hematoma getting infected3. A small thin sinus on the skinned the discharge, though bloody, is nothing but pus!Therefore, you have to see your doctor for a physical examination and some microbiological tests and to plan a treatment protocol!regards, 