Determining folliculitis of the scrotum can actually be clarified by examination. Folliculitis is a boil, which manifests as localized redness, swelling, heat and pain of the skin. Folliculitis of the scrotum will have pain in the area of the scrotum where there is redness and swelling. Sometimes there are also white heads, and pus may flow when squeezed. The treatment for folliculitis is to apply topical antibiotic ointment, which may be able to eliminate the folliculitis. Severe infections may become purulent and require incision and drainage of the abscess to release the pus, and the infection may improve quickly. So to determine scrotal folliculitis, you can tell by looking at it with your eyes, and treatment is topical antibiotic ointment, which may require incision and drainage in severe cases.