Infantile hemangioma (IH) usually grows in early infancy and then regresses on its own. 80% of its volume is reached by 3 months of age, but many superficial IHs experience accelerated growth at 4-7 weeks and complete most of their growth by 2 months of age. Deep IH is mostly found in the first month of life and has a longer proliferation period than superficial IH. individual IH grows very little and is called stop-growth or minimal-growth IH. based on these growth characteristics, if systemic treatment is needed, it is best to start before 3 months of age. It gradually regresses in the following years, but mostly nears completion at age 4. The size, location, and growth characteristics of IH vary individually (heterogeneous), and it is necessary to grade the potential risk factors for complications. These risks include ulceration, bleeding, visual impairment, hearing impairment, cardiac impairment, and airway obstruction, with ulceration being the most common, occurring in nearly 10-15% of cases, mostly at 4 months of age. Pain, bleeding, and infection can aggravate the ulcers. The liver and airway are the most common sites of morbidity outside the skin. If there are 5 or more hemangiomas, an abdominal ultrasound should be performed to rule out the possibility of hepatic hemangioma trapping. Other complications are associated with certain related syndromes.