How should stork bite (nevus simplex) lesions in a newborn be managed?

Management of Stork Bites (Nevus Simplex) in Newborns

Stork bites (nevus simplex) require no treatment and can be managed with parental reassurance alone, as these benign capillary malformations typically fade spontaneously over time. 1

What is a Stork Bite?

Nevus simplex, commonly called a "stork bite" or "salmon patch," is an extremely common benign vascular birthmark that doesn't cause pain or harm 2. These lesions typically appear on the glabella (forehead), upper eyelids, nape of neck, and occasionally more widespread locations 3.

Core Management Approach

Primary Management: Observation Only

• No medical intervention is needed for typical stork bites on the forehead, eyelids, or nape
• Provide parental education that these are benign and commonly fade over the first few years of life
• No routine follow-up is required unless parents have specific concerns

When to Consider Imaging

Important caveat: If the nevus simplex is located over the sacral/lumbosacral area, this warrants additional evaluation 4:

• Sacral nevus flammeus simplex may be the only cutaneous sign of occult spinal dysraphism
• Perform ultrasound imaging of the lumbosacral spine in neonates with sacral lesions
• One study found diastematomyelia in 1 of 25 patients (4%) with sacral nevus simplex who underwent imaging 4
• This is distinct from typical "stork bites" on the nape, which do not require imaging

Distinguishing from Other Vascular Lesions

Nevus simplex should be differentiated from:

• Port-wine stains (nevus flammeus): These are darker, more persistent, and may benefit from early pulsed dye laser treatment before one year of age 1
• Infantile hemangiomas: These are raised, proliferative lesions that may require systemic beta-blocker therapy if they pose risk of complications 1

Common Pitfalls to Avoid

1. Do not confuse extensive nevus simplex with port-wine stains - Widespread involvement beyond typical sites (termed "nevus simplex complex") can occur and still represents benign nevus simplex 3

2. Do not overlook sacral location - While typical stork bites need no workup, sacral lesions require spine imaging to rule out dysraphism 4

3. Do not perform unnecessary interventions - Unlike port-wine stains, typical nevus simplex does not require laser therapy or other treatments

Documentation and Counseling

• Document the location and appearance at newborn examination
• Reassure parents that most lesions on the nape, forehead, and eyelids fade significantly by age 1-2 years
• Nape lesions may persist longer but remain benign
• No restrictions on normal handling, bathing, or care of the infant