The dampness under the testicles is mainly due to the close contact between the testicles and the inner thighs. And it is easy to sweat leading to friction and bacterial growth leading to the phenomenon of eczema in the local scrotum. It is recommended that the area be cleaned with warm water or washed with 1:5000 potassium permanganate powder and then wiped clean with a dry towel. Topically, you can choose to use Dakine ointment topically or Clotrimazole ointment topically, the effect is better. The normal course of the disease takes 2-3 weeks, do not choose to have intercourse until it is completely treated. And usually wear cotton underwear, the underwear worn every day should be changed and washed, need to be exposed to the sun.