Hemangioma is the most common benign tumor in infancy. Over 90% of hemangiomas require no treatment, but there is a need to recognize those that may require even quick measures to secure vital functions or normal development of organs. Propranolol has established itself as the first-line treatment. Pulsed dye laser has proven effective in the treatment of ulcerated hemangiomas. Corticosteroid therapy is applied only rarely, but surgical treatment or angiography and embolization therapy associated with it may sometimes be indicated.