When people have hemangioma, they generally think it is a very serious disease, and many people confuse hemangioma with cancer. In fact, hemangioma is a kind of congenital benign tumor, as long as its growth volume and growth speed do not increase, it will not harm normal tissues, so what are the reasons for hemangioma? 1, hemangioma is a kind of lump formed by the rapid growth of cells in blood vessels. The lump is not solid, but filled with blood vessel lumen, which is medically called blood sinus, and is the result of abnormal development of blood vessels. Hemangiomas usually appear at birth or during the development of the baby after birth. 2. Initially, a small red dot or multiple small red dots will rapidly increase in size and spread and fuse into a single hemangioma. There is a specific proliferation period and a stable period for hemangioma, and some of them can be cured and recovered by themselves, but timely examination and treatment is required. 3, if you are suffering from hemangioma to go to timely treatment, some of the hemangioma can grow rapidly, and its destructive power is very large, if the treatment is very untimely, it may cause serious consequences. You must learn to make your life more regular, and try not to bring certain diseases to our body because of our irregular life or bad habits, which can seriously affect normal life.