Nevus Flammeus, commonly known as port-wine stains, are birthmarks that appear as red or pink marks on the skin. There are several synonyms for this condition, including vascular birthmarks, capillary malformations, salmon patches, and stork bites. These marks are caused due to an abnormal increase in the number of blood vessels present in the affected area. While port-wine stains are typically harmless, they can cause emotional distress or embarrassment for those who have them. Treatment options include laser therapy, which can help reduce the appearance of the marks over time. It's essential to consult with a dermatologist to determine the best course of action for addressing nevus flammeus.