There are more reasons for crotch dampness, which may be caused by the lack of breathability of underwear, leakage of urine, excessive vaginal secretion in women, varicocele in men and so on. 1. Breathless panties: It may be that the material of panties is not breathable, coupled with a long period of sedentary life, the evaporated water in the body can not be well discharged, and crotch dampness may occur. 2. Leakage of urine: it may be that a woman’s uterus enlarges during pregnancy and presses the bladder, which may result in crotch wetness. 3. Excessive vaginal secretion in women: for example, during ovulation, vaginal inflammation, etc., which can lead to increased vaginal secretion and crotch wetness may also occur. 4. Varicose veins in men: it refers to the blood stagnation in the trailing vascular plexus of the spermatic cord due to various reasons, which can cause the local temperature to increase, thus leading to dampness at the root of the penis. When there is crotch moisture and accompanied by physical discomfort. It is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, clarify the cause with the help of the doctor, and carry out targeted treatment or therapy.