There are two clinical conditions of blood nevus on the body: 1. Infantile hemangioma, also known as strawberry nevus or strawberry hemangioma, appears within one week or several months after birth, and the initial damage is a small light red dot, which rapidly increases and thickens to form a bright red or dark red mass of 0.5-3 cm in diameter or larger, higher than the skin surface, soft in texture, with strawberry-like particles on the surface. 2. Elderly hemangioma, also known as cherry-like hemangioma or ruby nevus, is most common in the elderly. The damage starts as a red pinpoint-sized papule and slowly increases to the size of a green bean to a soybean, with a bright red or dark red color. These two types of nevi do not affect the health too much and can be treated without treatment.