Today, I found a small bag on my head. It doesn't hurt or itch. It's about a centimeter in diameter. I felt a bulge when I touched my head with my hand. I didn't notice it. I took a picture. What is the possible reason? How to treat?
This situation needs to be observed first. Sometimes folliculitis can also be caused, but the redness and swelling is not serious. You can disinfect with Iodophor, apply erythromycin ointment or more than 100 countries for conditioning and observation to see if it can be improved