Summer crotch sweat penis with white powder mud is generally normal, this is generally a normal phenomenon caused by circumcision scale, regular cleaning can be, no need to worry too much, but if the patient is also accompanied by pain in the urethral opening and other symptoms, you need to be vigilant about the possibility of other diseases such as urethritis, prepuce and glans penis.
Foreskin scum is a mixture of epithelial cells shed from the foreskin, sebaceous gland secretion of substances and bacteria, for the long foreskin or people suffering from phimosis, especially prone to the accumulation of foreskin scum, this group of people in addition to the surface of the white powdery mud like material, generally no other discomfort symptoms, this situation only need to be cleaned at regular intervals.
However, if the patient is accompanied by other symptoms such as pain in the urethra, then it is possible to suffer from urethritis, glans penis and other diseases, need to consult a doctor in a timely manner, under the guidance of the doctor for treatment.