<s>[INST] Hi doctor, I have a question. So i have started running every morning for sports coming up for school and I ve been sweating a lot. I ve noticed that I ve been very irritated in the butt crack region and I took a look and it seems almost raw? I thought it was a rash and I ve tried desitin, but I m not sure exactly how to treat it since I m unsure what it is. [/INST] Hello, Thanks for writing here. You are having perianal intertwine. Sweating, friction with clothes can irritate skin leading to intertwine. Take regular bath after running. Use loose shorts while running. Keep area Chat Doctor. , you can use antifungal powder like candid at daytime. At night, you can apply a steroid antifungal cream like candid b for 1 week. In case if there is no response it will be better to consult a dermatologist. Hope this will help you. Take care. </s>