[Post-traumatic achromia in vitiligo (vitiligo facticio)].

Two patients affected with vitiligo showed achromic lesions in areas of skin apparently normal submitted to the action of external traumatic agents. In the first case the striate linear lesion might be attributed to the excoriation due to pruritus determined by scabies. In the second one an angular lesion in both feet was strictly limited to the areas exposed to the straps of sandals.