<s>[INST] i have this bump on my cheast it started out like a pimple, but slightly bigger and red around the surface with a head in the middle. i talked to a friend of mine and he said it kinda looking like staff infection or mrsa. could i get info on this health condition? [/INST] Hi, dairy have gone through your question. I can understand your concern.  You have lump on chest with head. It can be sebaceous cyst or some abscess formation or inflamed cystic lesion.  You should go for examination.  Then you should take treatment accordingly.  If it is infection then take antibiotics treatment and if it is cyst or tumor then excision biopsy should be done.  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. </s>