A child who has a raised red or dark red mass on the head or face just after birth or in the first few months of life may have a cavernous hemangioma, which needs to be diagnosed by a specialist, mainly by outpatient physical examination and head MRI, ultrasound and, in a few cases, angiography. If the diagnosis is clear, does such a cavernous hemangioma require treatment? In fact, most cavernous hemangiomas do not require treatment, as they may grow rapidly within six months of birth and then gradually subside on their own. The proliferative phase is characterized by a gradual increase in size and red color, and may be in the receding phase if the color gradually turns darker. Hormone therapy may be considered for children with more extensive lesions, but hormone therapy is mainly effective for infants within 6-8 months of age who are in the growth phase of the lesion. There are only a few cases of cavernous hemangioma that require aggressive treatment (including sclerotherapy, interventional embolization, freezing, surgical excision, etc.), one being growth at the tip of the nose and the auricle, where ulcers can easily cause facial disfigurement, and the other being painful tumor bleeding and tumor proximity to the respiratory tract.