Port Wine Stains In Babies: Causes, Symptoms, And Treatment

Baby Tips

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A port-wine stain birthmark, also known as nevus flammeus, is a congenital vascular malformation of the skin. It affects three to five children per 1,000 live births and results from the concentration of dilated tiny blood vessels called capillaries.

Although it is not a cause for concern in most cases, it is good to get your baby’s port-wine stain birthmark evaluated, as approximately 15-20% of children with this type of birthmark around the eye are at risk of developing Sturge-Weber syndrome (1).

Read this post on the symptoms, complications, and treatments for port-wine stain birthmarks in babies.

Signs Of Port-Wine Stain Birthmarks In Babies

As the name suggests, port-wine stain birthmarks look like maroon wine splashed on the skin. These generally appear at birth and are often seen on the face, neck, arms, and legs. In some rare cases, they continue to grow as the child grows.

Here are a few signs that might help you identify port-wine stain birthmarks in your baby.

  1. Looks flat and pink, red, or purple
  2. Maybe confined to an area or cover larger areas of the body
  3. Doesn’t change color when gently pressed
  4. Might get darker or thicker as the child grows older
  5. Is persistent and does not disappear over time (2)

Causes Of Port-Wine Stain Birthmarks In Babies

The exact cause of port-wine stain birthmarks is not known. However, it is believed to be caused due to an abnormal formation of tiny blood vessels in the skin. It is also believed that these develop during the first two to eight weeks of pregnancy (3) (4).

Complications Of Port-Wine Stain Birthmarks 

Like any other birthmark, port-wine stain birthmarks are harmless and are rarely associated with any underlying issue. However, in some rare cases, this birthmark could be associated with Sturge-Weber syndrome. The condition is often characterized by symptoms such as seizures, glaucoma, cerebral cortex atrophy, headache, developmental delays, and intellectual impairments. Children who have port-wine stain birthmarks covering half of the face or more are at a higher risk of developing this condition (5) (6).

It could also be associated with Klippel-Trenaunay-Weber syndrome, a condition that affects the development of blood vessels and soft tissues (7).

Apart from the physical complications, port-wine stain birthmarks may also cause mental issues as the baby grows up. They may feel low self-esteem and can even go into depression, fearing rejection.

Diagnosis Of Port-Wine Stain Birthmark

The doctor would be able to diagnose port-wine stain birthmarks via a physical examination. But, if the birthmark is present around the eye or on the face, the doctor might monitor it. They may order tests such as X-ray, CT scan, or MRI.

Treatment For Port-Wine Stain Birthmark In Babies

Generally, port-wine stain birthmarks may not need treatment. However, if the stains cover a large area of the body, or you feel it is necessary to get them removed, laser treatment is the best available option.

Laser treatment can be started by the time your baby is six months old. Talk to your pediatrician before starting the treatment.

This birthmark tends to get dry, so it is important to apply a moisturizing cream once or twice a day (8).

Port-wine stain birthmarks are common in babies and are not a cause for concern in most cases. However, if you notice these birthmarks around your baby’s eyes or if the birthmarks are large, consult your baby’s doctor.


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