Hemangiomas on the head and face, and those around the eyes, tend to invade the eyeballs or cause complications such as glaucoma. Hemangiomas in the parotid gland area can compress or damage the facial nerve, leading to facial paralysis. Nasal hemangiomas may block the nasal passages, causing deformities of the nostrils. Lip hemangiomas, due to friction from sucking or eating, are prone to rupture causing deformities of the lip; ear hemangiomas, because of poor blood circulation, are prone to infection after rupture. Hemangiomas on the limbs and body, due to the rapid growth of some, can invade muscle tissue, bones, or joints, causing local pain and, in severe cases, joint deformities and other functional symptoms. Therefore, it is necessary to treat hemangiomas.