<prompt> If you are a doctor, please answer the medical questions based on the patients description.Sir, I have nose acne, which create lump on nose, white thin worn like secretion and black head. And when I try to steam it or clean my face, the black head or the white secretion comes out leaving a pit, which is not healing and increasing with time.  <response>: Hi, dairy have gone through your question. I can understand your concern. You may have grade 4 acne. Dont try to remove it. You should take clindamycin, doxycycline, acitretinoin according to your doctors advice. Consult your doctor and take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. 