<s>[INST] I dont like to use public restrooms but when you are driving a distance sometimes you have to. Being in a hurry, as a female, I tried the old balance yourself since I didnt have time to line the toilet with paper.  Well, of course, I lost balance and my butt hit the seat.  Well, first time ever this has happened to me, I literally have what looks like a burn mark on my torso in the shape of a partial toilet seat. No itching just red and a bit burning.  So far I cleaned the skin with warm water, and applied bacitracin.  Help. [/INST] Hello. Thank you for writing to us at Chat Doctor I think you have developed a large bruise Or an ecchymosis at the site of trauma resulting from fall. This is nothing but due to soft tissue bleeding and would resolve within a few days. There is no role of topical antibiotic like bacitracin because the overlying skin would be intact in a bruise. You might notice a color change over it as the suffused hemoglobin degrades and therefore changes color to bluish red, green, yellow and finally resolves. If I was the treating doctor I would suggest an Oral vitamin C supplement once daily for a week or 10 days. Regards </s>