The most common condition of small white spots on the back may be an anemic nevus, as the favored site of an anemic nevus is usually the back. And the anemic nevus near the area on both sides of the spine of the back is usually very limited, such as a small white spot or small patch, this white spot usually appears due to the localized capillary operation disorder. This white change due to localized ischemia is not vitiligo because with a little rubbing there may not be any reaction. However, vitiligo may turn red as soon as it is rubbed, so vitiligo is possible, but not as likely as an anemic nevus.