Hello. Thanks for your query. You are having boil on scrotum, it is an infection of hair follicle/oil gland. It is usually caused by Staphylococcus. Apply warm compresses on boils repeatedly. This will decrease the pain and help draw the pus to the surface. Once the boil comes to a head, it will burst with repeated soakings. Avoid excessive heat to testicles. When the boil starts draining, wash it with an antibacterial soap until all the pus is gone. Do not pop the boil with a needle. Keep good personal hygiene. If boil persists or enlarges then contact health care provider ti drain it surgically. Hope it helps. Take Care!