It came up like a blister on my foot, but when I left it alone, it spread a bit ㅠㅠ So I visited Su-kyung Dermatology Clinic. I went in the afternoon, so it wasn't as crowded as the morning, and I was examined by Director Su-kyung after about an hour. She explained in detail that if your immunity is low or you are stressed, it will show up on your skin.
He did it for me. He told me to wear sneakers and not tight socks. I was prescribed Esroban, an oral medication and topical medication, and after taking it and applying it for 2-3 days, my skin got a lot better. If you leave your skin untreated, it will get worse, so if you notice anything unusual, see a doctor right away. I also watched it thinking it would be okay, but there were many times when it passed the golden time.