Hello, Welcome to HCM, The vaginal yeast infection can present with symptoms like itching, pain and white color discharge. The fungus are the normal comensals of the genitals which will be kept under control by the helpful bacteria, whenever there is a change in the environment it will activate and produces the symptoms of fungus infection. The fungal infection for longer period of time can result in discoloration of the skin of the genitals but it is reversible and it will revert back to normal.The skin in the area of genitals are known undergo discoloration because of the frequent friction. The application of antifungal cream will cure the condition and the momentasone cream is known to helpful in discoloration. Thank you.