Anemia nevus is a congenital limited light colored spot of skin where there is a defect in the development of the vascular tissue, but not a structural but a functional abnormality, mostly occurring after birth or during childhood. It can occur anywhere, but is more common on the trunk and does not fade for life. The white spots of anemia nevus must be distinguished from vitiligo. When rubbing the white spot of anemia nevus, the skin at the white spot is not congested and reddened due to abnormal vascular function, and the surrounding skin is red. In contrast, vitiligo’s white spot has congestion and redness after friction. Or pressed with a slide, anemic nevus and the surrounding whitened skin are not easily distinguished, while the white spots of vitiligo have a demarcation line with the surrounding skin after pressing.