Birthmark



         


A birthmark, also known as a Naevus, is a blemish on the skin formed before birth. The cause of birthmarks is unknown, but may include cellular damage due to radiation or chemicals. Some types of birth marks seem to run in families.

A number of different birthmarks are known. They include Stork bite mark, Mongolian blue spot, Strawberry mark, Cafe au lait spot, Congenital melanocytic naevus, and neurofibromatosis. The spots do not fade with age.

Treatment 
Cosmetic


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Congenital melanocytic naevus

Also known as 
Colour 
light brown (in fair skinned people) to almost black (in darker skinned people).
Shape 
Irregular, small marks usually flat, large ones can be raised and lumpy.
Texture 
Sometimes hairy.
Size 
From under a centimeter to over 30 centimeters.
Location 
Can appear anywhere on the body
Frequency 
About one in a hundred births.
Prognosis 
Some, but not all, studies have suggested a cancer risk is associated with large marks. Some marks are associated with a build up of melanin in the spinal cord, a condition called neurocutaneous melanosis. Naevi close to the eye are associated with glaucoma. Large visible marks can have a psychological impact.
Treatment 
Surgical removal is an option, but will usually lead to scarring. The marks should be watched as sudden changes can be a sign of cancer.
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Port wine stain

Also known as: Naevus Flammus
Colour 
Pale pink at birth, becoming darker with age to a deep wine red.
Shape 
Irregular.
Texture 
Can become lumpy with age.
Size 
Usually large, more than ten centimeters across.
Location 
Often on the face
Frequency 
Three in one thousand births.
Prognosis 
The mark does not fade. Marks around the eye are associated with glaucoma. There can be a psychological impact.
Treatment 
Laser treatment is usually effective.

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