Skin & Rashes

My Baby Has a Streaky or Velvety Raised Birthmark (Epidermal Nevus)

Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician

Content reviewed against published NIH, DermNet, AAD guidelines

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Baby skin is sensitive and changes frequently. If you are noticing has a streaky or velvety raised birthmark (epidermal nevus), here is what you need to know.

The short answer

An epidermal nevus is a benign (non-cancerous) overgrowth of skin cells that is present at birth or appears in early childhood. It typically looks like a slightly raised, skin-colored to brownish, velvety or wart-like patch that often follows a linear or streaky pattern along the body's natural skin lines (Blaschko lines). Epidermal nevi are usually isolated and purely cosmetic. However, when they are large or extensive, they can sometimes be associated with abnormalities in other organ systems (epidermal nevus syndrome), so a thorough evaluation is recommended for larger lesions.

Key takeaways

  • An epidermal nevus is a benign (non-cancerous) overgrowth of skin cells that is present at birth or appears in early childhood. It typically looks like a slightly raised, skin-colored to brownish, velvety or wart-like patch that often follows a linear or streaky pattern along the body's natural skin lines (Blaschko lines). Epidermal nevi are usually isolated and purely cosmetic. However, when they are large or extensive, they can sometimes be associated with abnormalities in other organ systems (epidermal nevus syndrome), so a thorough evaluation is recommended for larger lesions.
  • Usually normal when: Your baby has a small, linear, slightly raised patch that has been evaluated and identified as an epidermal nevus
  • Call your doctor if: A rapidly growing or changing nodule develops within the epidermal nevus — seek dermatologic evaluation
  • Varies by age — see the age-by-age breakdown below
Eczema is very common in babies and children. About 1 in 10 children will develop eczema, typically starting in the first few months of life.
Eczema in Babies and Children, American Academy of Pediatrics (AAP)

This is one of the most common questions parents ask. Searching for answers means you care.

What Parents Should Know

According to NIH, DermNet, AAD guidelines, an epidermal nevus is a benign (non-cancerous) overgrowth of skin cells that is present at birth or appears in early childhood. It typically looks like a slightly raised, skin-colored to brownish, velvety or wart-like patch that often follows a linear or streaky pattern along the body's natural skin lines (Blaschko lines). Epidermal nevi are usually isolated and purely cosmetic. However, when they are large or extensive, they can sometimes be associated with abnormalities in other organ systems (epidermal nevus syndrome), so a thorough evaluation is recommended for larger lesions. At 0-6 months, epidermal nevi may be present at birth or become apparent in the first few months as they darken or thicken slightly. In infancy, they may appear as faint, smooth, slightly raised streaks on the skin. They are painless and do not itch at this age. Your pediatrician may refer you to a pediatric dermatologist for evaluation and to distinguish it from other birthmarks. It is generally considered normal when your baby has a small, linear, slightly raised patch that has been evaluated and identified as an epidermal nevus. However, you should contact your pediatrician promptly if a rapidly growing or changing nodule develops within the epidermal nevus — seek dermatologic evaluation.

Sources: [1], [2], [3]

Normal vs. Concerning

Usually Normal
Worth Discussing
Your baby has a small, linear, slightly raised patch that has been evaluated and identified as an epidermal nevus
A rapidly growing or changing nodule develops within the epidermal nevus — seek dermatologic evaluation
The nevus is stable in appearance and not causing any symptoms
Your child has seizures or neurological symptoms along with an extensive epidermal nevus — this needs urgent medical evaluation
Your child has an isolated epidermal nevus with no other health concerns
The epidermal nevus is large, extensive, or covers a large portion of the body

By Age

What to expect by age

0-6 months

Epidermal nevi may be present at birth or become apparent in the first few months as they darken or thicken slightly. In infancy, they may appear as faint, smooth, slightly raised streaks on the skin. They are painless and do not itch at this age. Your pediatrician may refer you to a pediatric dermatologist for evaluation and to distinguish it from other birthmarks.

6 months - 2 years

During this period, the nevus may become more noticeable — slightly thicker, more textured, and possibly darker. Small, isolated epidermal nevi require no treatment but should be monitored. If the nevus is large, extensive, or located on the head or face, your dermatologist may recommend evaluation for epidermal nevus syndrome, which can involve the brain, eyes, and skeleton.

2-5 years

The epidermal nevus reaches its final appearance during childhood. It does not continue to spread. If it is causing cosmetic concern or is in a location that causes irritation, treatment options include laser therapy, surgical removal, or topical treatments, though recurrence after treatment is possible. Most small nevi are simply monitored.

5 years+

Epidermal nevi are benign and the risk of malignant transformation is extremely low. They persist throughout life. If the nevus is cosmetically bothersome, discuss treatment options with your dermatologist. For children with epidermal nevus syndrome, ongoing monitoring of the brain, eyes, and skeleton is coordinated by the relevant specialists.

What to Tell Your Pediatrician

  • Describe when you first noticed has a streaky or velvety raised birthmark (epidermal nevus) and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if the epidermal nevus is large, extensive, or covers a large portion of the body.
  • Mention if the nevus is located on the head or face — this may warrant evaluation for associated conditions.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

What Should You Do?

When to take action

Probably normal when...
  • Your baby has a small, linear, slightly raised patch that has been evaluated and identified as an epidermal nevus
  • The nevus is stable in appearance and not causing any symptoms
  • Your child has an isolated epidermal nevus with no other health concerns
Mention at your next visit when...
  • The epidermal nevus is large, extensive, or covers a large portion of the body
  • The nevus is located on the head or face — this may warrant evaluation for associated conditions
  • The nevus becomes itchy, painful, or inflamed
  • You notice other developmental or health concerns in addition to the skin finding
Act now when...
  • A rapidly growing or changing nodule develops within the epidermal nevus — seek dermatologic evaluation
  • Your child has seizures or neurological symptoms along with an extensive epidermal nevus — this needs urgent medical evaluation

What You Can Do at Home

  • Keep track of when you notice has a streaky or velvety raised birthmark (epidermal nevus) — noting the time of day, duration, and any triggers can help your pediatrician.
  • Remember that your baby has a small, linear, slightly raised patch that has been evaluated and identified as an epidermal nevus — this is generally within the range of normal.
  • At 0-6 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
  • Use fragrance-free, hypoallergenic products on your baby's skin. Avoid over-bathing — 2-3 baths per week is usually sufficient.
  • While monitoring at home, seek immediate care if a rapidly growing or changing nodule develops within the epidermal nevus — seek dermatologic evaluation.

My Baby Has a Waxy Yellowish Patch on Their Scalp (Nevus Sebaceous)

A nevus sebaceous (also called nevus sebaceous of Jadassohn) is a benign birthmark that typically appears on the scalp as a flat or slightly raised, yellowish-orange, waxy or velvety patch where hair does not grow. It is present at birth and occurs in about 0.3% of newborns. During childhood, it remains relatively flat and inconspicuous. At puberty, it becomes thicker and more noticeable due to hormonal stimulation. There is a small risk (historically overstated) of developing benign or rarely malignant tumors within the nevus later in life, so monitoring and potential removal are discussed with your dermatologist.

My Baby Has a Vascular Malformation (Port-Wine Stain or Deeper)

Vascular malformations are structural abnormalities of blood vessels or lymph vessels that are present at birth (though some become apparent later). Unlike hemangiomas, which grow rapidly and then shrink, vascular malformations grow proportionally with the child and do not go away on their own. They are classified by the type of vessel involved: capillary (port-wine stains), venous, lymphatic, or arteriovenous. Most are benign and manageable, but the approach depends on the type, location, and whether associated conditions are present (such as Sturge-Weber syndrome with facial port-wine stains).

My Baby Has a Bump Near Their Eye or on Their Head (Dermoid Cyst)

A dermoid cyst is a benign (non-cancerous) growth that is present at birth, though it may not be noticed right away. It forms during fetal development when skin cells become trapped beneath the surface. Dermoid cysts commonly appear near the eyebrow (most common location), on the scalp, or at the bridge of the nose. They typically feel like a firm, non-tender, round lump that does not move much. While they are not dangerous, dermoid cysts do not resolve on their own and are usually removed surgically to prevent complications like infection or growth.

Frequently asked questions

Is has a streaky or velvety raised birthmark (epidermal nevus) normal?
An epidermal nevus is a benign (non-cancerous) overgrowth of skin cells that is present at birth or appears in early childhood. It typically looks like a slightly raised, skin-colored to brownish, velvety or wart-like patch that often follows a linear or streaky pattern along the body's natural skin lines (Blaschko lines). Epidermal nevi are usually isolated and purely cosmetic. However, when they are large or extensive, they can sometimes be associated with abnormalities in other organ systems (epidermal nevus syndrome), so a thorough evaluation is recommended for larger lesions.
When should I call the doctor about has a streaky or velvety raised birthmark (epidermal nevus)?
A rapidly growing or changing nodule develops within the epidermal nevus — seek dermatologic evaluation Your child has seizures or neurological symptoms along with an extensive epidermal nevus — this needs urgent medical evaluation
When is has a streaky or velvety raised birthmark (epidermal nevus) normal?
Your baby has a small, linear, slightly raised patch that has been evaluated and identified as an epidermal nevus The nevus is stable in appearance and not causing any symptoms Your child has an isolated epidermal nevus with no other health concerns
What causes has a streaky or velvety raised birthmark (epidermal nevus)?
An epidermal nevus is a benign (non-cancerous) overgrowth of skin cells that is present at birth or appears in early childhood. It typically looks like a slightly raised, skin-colored to brownish, velvety or wart-like patch that often follows a linear or streaky pattern along the body's natural skin lines (Blaschko lines). Epidermal nevi are usually isolated and purely cosmetic. However, when they are large or extensive, they can sometimes be associated with abnormalities in other organ systems (epidermal nevus syndrome), so a thorough evaluation is recommended for larger lesions. Common explanations include: Your baby has a small, linear, slightly raised patch that has been evaluated and identified as an epidermal nevus. The nevus is stable in appearance and not causing any symptoms.
What should I mention to my pediatrician about has a streaky or velvety raised birthmark (epidermal nevus)?
You should mention has a streaky or velvety raised birthmark (epidermal nevus) at your next visit if: The epidermal nevus is large, extensive, or covers a large portion of the body. The nevus is located on the head or face — this may warrant evaluation for associated conditions. The nevus becomes itchy, painful, or inflamed.
Is has a streaky or velvety raised birthmark (epidermal nevus) normal at 0-6 months?
Epidermal nevi may be present at birth or become apparent in the first few months as they darken or thicken slightly. In infancy, they may appear as faint, smooth, slightly raised streaks on the skin. They are painless and do not itch at this age. Your pediatrician may refer you to a pediatric dermatologist for evaluation and to distinguish it from other birthmarks.
Is has a streaky or velvety raised birthmark (epidermal nevus) normal at 6 months - 2 years?
During this period, the nevus may become more noticeable — slightly thicker, more textured, and possibly darker. Small, isolated epidermal nevi require no treatment but should be monitored. If the nevus is large, extensive, or located on the head or face, your dermatologist may recommend evaluation for epidermal nevus syndrome, which can involve the brain, eyes, and skeleton.
Should I go to the ER for has a streaky or velvety raised birthmark (epidermal nevus)?
Seek emergency care if a rapidly growing or changing nodule develops within the epidermal nevus — seek dermatologic evaluation, or if your child has seizures or neurological symptoms along with an extensive epidermal nevus — this needs urgent medical evaluation. When in doubt, call your pediatrician's after-hours line for guidance.
Does has a streaky or velvety raised birthmark (epidermal nevus) go away on its own?
In many cases, has a streaky or velvety raised birthmark (epidermal nevus) resolves on its own, especially when your baby has a small, linear, slightly raised patch that has been evaluated and identified as an epidermal nevus. By 5 years+, epidermal nevi are benign and the risk of malignant transformation is extremely low. They persist throughout life. If the nevus is cosmetically bothersome, discuss treatment options with your dermatologist. For children with epidermal nevus syndrome, ongoing monitoring of the brain, eyes, and skeleton is coordinated by the relevant specialists.

References

  1. [1]National Library of Medicine. Epidermal Nevus. StatPearls, 2024. NIH
  2. [2]DermNet NZ. Epidermal Naevus. DermNet
  3. [3]American Academy of Dermatology. Birthmarks. AAD

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss My Baby Has a Streaky or Velvety Raised Birthmark (Epidermal Nevus).

Things to mention

  • Describe when you first noticed has a streaky or velvety raised birthmark (epidermal nevus) and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if the epidermal nevus is large, extensive, or covers a large portion of the body.
  • Mention if the nevus is located on the head or face — this may warrant evaluation for associated conditions.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

Observations to share

  • The epidermal nevus is large, extensive, or covers a large portion of the body
  • The nevus is located on the head or face — this may warrant evaluation for associated conditions
  • The nevus becomes itchy, painful, or inflamed

Urgent signs to report immediately

  • A rapidly growing or changing nodule develops within the epidermal nevus — seek dermatologic evaluation
  • Your child has seizures or neurological symptoms along with an extensive epidermal nevus — this needs urgent medical evaluation

My notes

From ismybabyalright.com — free, evidence-based baby health guides

All content follows our editorial policy and is reviewed against published clinical guidelines.

2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members

Bottom line

Most cases of has a streaky or velvety raised birthmark (epidermal nevus) are normal. Talk to your pediatrician if a rapidly growing or changing nodule develops within the epidermal nevus — seek dermatologic evaluation.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

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My Baby Has a Waxy Yellowish Patch on Their Scalp (Nevus Sebaceous)

A nevus sebaceous (also called nevus sebaceous of Jadassohn) is a benign birthmark that typically appears on the scalp as a flat or slightly raised, yellowish-orange, waxy or velvety patch where hair does not grow. It is present at birth and occurs in about 0.3% of newborns. During childhood, it remains relatively flat and inconspicuous. At puberty, it becomes thicker and more noticeable due to hormonal stimulation. There is a small risk (historically overstated) of developing benign or rarely malignant tumors within the nevus later in life, so monitoring and potential removal are discussed with your dermatologist.

My Baby Has a Vascular Malformation (Port-Wine Stain or Deeper)

Vascular malformations are structural abnormalities of blood vessels or lymph vessels that are present at birth (though some become apparent later). Unlike hemangiomas, which grow rapidly and then shrink, vascular malformations grow proportionally with the child and do not go away on their own. They are classified by the type of vessel involved: capillary (port-wine stains), venous, lymphatic, or arteriovenous. Most are benign and manageable, but the approach depends on the type, location, and whether associated conditions are present (such as Sturge-Weber syndrome with facial port-wine stains).

My Baby Has a Bump Near Their Eye or on Their Head (Dermoid Cyst)

A dermoid cyst is a benign (non-cancerous) growth that is present at birth, though it may not be noticed right away. It forms during fetal development when skin cells become trapped beneath the surface. Dermoid cysts commonly appear near the eyebrow (most common location), on the scalp, or at the bridge of the nose. They typically feel like a firm, non-tender, round lump that does not move much. While they are not dangerous, dermoid cysts do not resolve on their own and are usually removed surgically to prevent complications like infection or growth.

My Baby Has an Extra Nipple (Accessory Nipple)

Accessory (supernumerary) nipples are one of the most common minor congenital findings, occurring in about 1 in 18 people. They appear as small, flat, often pigmented bumps along the "milk line" — an embryonic line running from the armpit to the groin on each side. Most people mistake them for moles. Accessory nipples are almost always harmless and require no treatment. In rare cases, they may be associated with kidney abnormalities, so some pediatricians recommend a renal ultrasound if one is found, though this practice varies.

My Baby Was Born with a Raw Spot on Their Scalp (Aplasia Cutis)

Aplasia cutis congenita (ACC) is a condition where a baby is born with a small area of missing skin, most commonly on the scalp. It occurs in about 1 in 10,000 births. The affected area may look like a raw wound, an ulcer, or may have already healed into a thin, shiny scar by the time of birth. Most cases are small, isolated, and heal well with basic wound care — the area eventually forms a hairless scar. Larger defects or those associated with other findings may need more investigation, but isolated small ACC has an excellent prognosis.

New Treatments for Atopic Dermatitis (Eczema) in Children

Treatment for atopic dermatitis in children has advanced significantly in recent years. While moisturizers and topical steroids remain first-line treatments, newer options include non-steroidal topical medications (like crisaborole), biologic therapies (like dupilumab, approved for children 6 months and older), and JAK inhibitors. Most children's eczema is well-managed with basic skin care and mild topical treatments, but these newer options provide hope for moderate-to-severe cases.