A birthmark on the face with hair is a congenital skin condition characterized by a patch of skin that is darker or lighter than the surrounding skin and has hair growing from it. The medical term for this condition is hairy nevus. Hairy nevi are usually present at birth, but they can also develop later in life. They are most commonly found on the face, but they can occur anywhere on the body.
Birthmarks on the face with hair can vary in size and shape. They can be small and barely noticeable, or they can be large and cover a significant portion of the face. The hair on the birthmark can be any color, but it is most commonly black or brown. Hairy nevi are usually harmless, but they can sometimes be a sign of an underlying medical condition, such as a neurocutaneous syndrome.