What Is a Stork Bite (Nevus Simplex)?

A stork bite, medically known as nevus simplex, is a common and harmless birthmark seen in newborns. It appears as a flat, pink or red patch on the skin caused by dilated blood vessels near the surface.

The name “stork bite” comes from old folklore that storks deliver babies and leave a mark where they carried the child.

What Are the Symptoms of a Stork Bite?

A stork bite typically appears as:

• A flat, pink or red patch on the skin
• Commonly found on the back of the neck, forehead, eyelids, or between the eyes and upper lip
• The color may deepen when the baby cries, strains, or is cold
• Usually painless and does not cause any other symptoms

What Causes a Stork Bite?

Stork bites are caused by:

• Dilated capillaries (small blood vessels) close to the skin surface
• These blood vessels are more visible due to thin skin in newborns
• The exact reason for these vessels dilating is not fully understood but is harmless

How Is a Stork Bite Diagnosed?

Diagnosis is based on the appearance and location of the birthmark:

• Physical examination by a healthcare provider
• No special tests are typically needed
• It is important to distinguish stork bites from other vascular birthmarks or skin conditions

How Is a Stork Bite Treated?

Treatment is usually not necessary because:

• Stork bites often fade on their own, especially those on the face, which usually disappear by 1 to 2 years of age
• Marks on the back of the neck may last longer but typically become less noticeable over time
• In rare cases where the mark persists and causes cosmetic concern, laser therapy can be considered

Complications of a Stork Bite

Stork bites generally do not cause any complications:

• They are harmless and do not affect health or development
• No pain, itching, or bleeding is associated with stork bites

How to Care for a Baby with a Stork Bite

• Keep the skin clean and moisturized
• Protect the skin from injury or irritation
• Regular pediatric check-ups to monitor the birthmark

Living with a Stork Bite

Most stork bites fade significantly or disappear by early childhood. They do not affect the child’s health or abilities, and no special precautions are required.