A birthmark is a benign skin irregularity that is present at birth or appears shortly after. It is characterized by a localized area of discolored or pigmented skin. Birthmarks can vary in size, shape, color, and texture. They are typically harmless and do not require treatment unless they cause physical discomfort or pose cosmetic concerns. Birthmarks are categorized into two main types: vascular birthmarks, caused by abnormal blood vessels, and pigmented birthmarks, caused by an overgrowth of pigment cells. While most birthmarks fade or shrink over time, some may persist into adulthood. Consulting a dermatologist about birthmark removal can provide further guidance and management options if necessary.