Dear sanjeto. Going by your history, gender is difficult to ascertain. Itching in the genitals can be different in the males & females. However, assuming you are female (more from the clue words highlighted on this HCM portal), & that itch started only 1 day or so ago (at time of reporting this), it is more likely to be a localised issue..by that i mean an insect bite reaction (very possible & brings to mind the term 'ants in your pants' if you did not dust your clothes after getn them off the line) or an irritant contact dermatitis
to some new underwear/soap/towel etc; tight jeans may have aggravated & one cannot rule out stress
...(the genitals are often the focus in stress related issues). Please try & use a topical steroid-antibiotic-antifungal mixed bag cream twice daily for two days & wear loose cotton clothing & avoid use of undergarments at home or as much possible. If in 48 hrs, it still persists, then go see your dermatologist
. Cheers & hope this helps you...Dr Praveen Rodrigues MD Dermatologist, Richmond town/Shivajinagar, Bangalore.