A hemangioma is a benign tumor made up of blood vessels, often appearing as a red or purple mark on the skin. These growths are most commonly found in infants and usually develop within the first few weeks of life. Hemangiomas can vary in size and may grow rapidly before gradually shrinking over time, often disappearing by the age of 5 to 10 years. While hemangiomas are generally harmless and do not require treatment, some cases may need medical attention if they interfere with vision, breathing, or other functions. In such instances, treatments like medication or laser therapy may be considered to reduce their size or improve appearance.