It is a idiopathic disease precipitating factors are unhygenic conditions so common in low socioeconomic group.
Due to some trauma, cut, infection, scratch mark, bacteria invades, which leads to inflammation of scrotum leading to obliterative arterities which causes fournier’ gangrene.
With in 2-3 days scrotum is sloughed off exposing testicles, luckily testicles are not involved due to thick albuginea.
Watch out the video on causes and treatment of Fournier’s Gangrene below
watch out the photographs of fourniers gangrene below