I get an occasional pimple (white head) on my scrotum. what could this be from and what should i do abut them?

Scrotal Cysts: The primary symptom of a scrotal cyst is the cyst itself. A cyst is a closed sac filled with gas, fluid, or semi-solid substance and can be located anywhere on the body. This particular type of cyst is located on the scrotum, which is the skin and tissue surrounding the testicles. If it grows large enough, the cyst may be seen with the naked eye as a lump protruding from the skin.