As such treatment of the vitiligo
is difficult and the success rate is very low. since there is only one patch that to on chest, which is usually covered area. local steroid
creams can be used to restrict the expansion of the lesion. there is home phototherapy
using UVB lights that can be tried. if there is a chance, as the skin lesion is small, 3 cm, surgically the white spot can be removed as the spot is on the chest with a minimal scar. my vitiligo spot was 2cms and 3 cms on the knuckles, i got it removed and now even the scar is not visible, i think surgical removal is the right way to treat if the option is possible to prevent the spread!