Vascular lesions are abnormal growths or changes in blood vessels that can occur in various parts of the body. They can be classified into different types, including hemangiomas, which are benign tumors made up of blood vessels, and vascular malformations, which are present at birth and can involve arteries, veins, or capillaries. These lesions can vary in appearance, size, and symptoms. Some may be visible on the skin as red or purple marks, while others may be deeper and cause complications depending on their location. Treatment options include observation, laser therapy, or surgical intervention, depending on the severity and impact on health.