Greetings. Firstly make sure the infection has totally subsided and you have no symptoms of skin lesions or itching. The darkness of skin can persist for few weeks to months - its worse if you are over weight and your thighs rub against each other and there is pigmentation due to friction too. You could try applying a skin lightening cream - STRICTLY UNDER PRESCRIPTION - daily night for a month only for the THIGH AREA AND NOT GROINF FOLD OR SCROTUM.
Next Steps
see a qualified dermatologist near you
Health Tips
Further queries and snaps of lesions can be sent on Practo Direct