###Human: What causes moist anal area? ###Assistant: Hello. This could be because of overactive sweat glands, oily skin with or without chronic low-grade infection. After bathing let the area dry completely, use pure cotton undergarments and use Myoderm-C dusting powder over your anal area as well as sprinkle some on the panty. I hope your bowels are fine and you are not constipated. If that is not the case, you need to be treated for the same.