<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have been experiencing pain for the last 4 days around my anal area. I was in the shower and noticed that there was a large lump on the left side of my anus, but internal lump.I have been prescribed antibiotics, I have been taking them since yesterday, but the lump has seem to be inflamed, and red. Also a round, patch, about a size of a penny has formed.What could this possibly be?Thank you  <response>: Hello dear if you walk to my clinic then I will going to do perianal examination. As you said that you have painful swelling around anus, so there are two common possibilities1. Inflamed external hemorrhoids: they need antibiotic, stool softener, site bath and excision under local anesthesia.2. Peranal abscess: in this condition you will have severe throbbing pain along with fever. Here you need antibiotics along with Chat Doctor. Hope this will help you, thanks 