The primary function of the scrotum is to provide protection to the testes and help in controlling the temperature in side the sac. The dartos muscle helps in movement of the scrotal skin. It also has hair follicles and, sebaceous and sweat glands. The sebaceous glands secrete sebum, an oily substance providing a fat layer to minimize evaporation of water.
Sebaceous cysts: The ducts of sebaceous glands get obstructed producing cysts.
Scrotal skin infection is similar to skin infection anywhere on the body.