Moles, Birthmarks, and Skin Changes: When to Seek Care

An independent educational resource prepared by Mark M. Simonian, MD, FAAP

Sources checked: August 9, 2026     |     Medical review completed: August 9, 2026

This page is for general education only and does not replace individualized medical advice. This resource does not establish a doctor-patient relationship. For questions about your own child, contact your child's current healthcare professional.

Magnolia Pediatrics, Valley Children's Healthcare

2497 E. Herndon Avenue, Suite 101, Clovis, CA 93611     |     559-538-3070

Most moles and birthmarks in children are harmless. The useful question is not whether a parent can name a mark at home, but whether it is new, changing in an unexpected way, painful, bleeding, or not healing.

Urgent Warning Signs - Check This First

A mole or birthmark is rarely an emergency. Seek help promptly when a skin change is accompanied by serious symptoms or a child looks very ill.

CALL 911 NOW

  • A severe allergic reaction with breathing or swallowing difficulty, collapse, or blue or gray color

  • Uncontrolled bleeding after a serious injury, or a child who is unresponsive or has other life-threatening symptoms

GET EMERGENCY MEDICAL CARE NOW

  • A rapidly spreading, painful red or purple skin area with fever, severe pain, or a child who looks very ill

  • A birthmark or skin growth that is badly injured and continues to bleed despite firm, direct pressure

CONTACT YOUR CHILD'S HEALTHCARE PROFESSIONAL TODAY

  • A mole, birthmark, or other spot that is changing quickly, looks noticeably different from the child's other moles, or has more than one color or an irregular border

  • A spot that bleeds without a clear injury, becomes painful or very itchy, breaks open, forms an open sore, or does not heal

  • A new or rapidly growing raised bump, especially if it is larger than the child's other moles

  • A large mole present at birth, many moles, six or more cafe-au-lait spots, or a birthmark near the eye, mouth, airway, or diaper area that is growing or causing symptoms

  • Any skin mark you are uncertain about, especially when there is a personal or close family history of melanoma or an immune condition

What Can Be Normal

  • New moles commonly appear during childhood and adolescence. A child's mole may slowly grow as the child grows and may become darker or lighter.

  • Birthmarks vary widely. Some are present at birth; others appear shortly afterward. Some fade, while others stay or change gradually as a child grows.

  • A strawberry-colored infantile hemangioma can grow quickly early in infancy before it later begins to shrink. A clinician can explain what pattern to expect for a particular birthmark.

What to Watch For

It is helpful to know the child's usual moles and birthmarks. Arrange an examination for a spot that is evolving or that looks like an "ugly duckling" - noticeably unlike the child's other moles. The adult ABCDE rule can be a useful reminder, but children may have different patterns; a changing, bleeding, itchy, rapidly growing, or unusual bump deserves attention even if it does not fit every letter.

  • A: asymmetry - one half does not resemble the other

  • B: border - an irregular, scalloped, or poorly defined edge

  • C: color - multiple colors or a meaningful color change

  • D: diameter - a spot growing larger, especially if it is larger than the child's other moles

  • E: evolving - a change in size, shape, color, surface, symptoms, or behavior

Home Care and Monitoring

  • Do not cut, burn, tie off, shave, pick, or use over-the-counter removal products on a mole or birthmark. These measures can cause infection, scarring, and make examination more difficult.

  • If a clinician recommends observation, take a clear photograph in good light with the date noted. Use the same angle and distance when comparing later photographs.

  • Protect all skin from sun exposure. Use shade, protective clothing, and sunscreen as described in the Sun Safety and Sunburn guide.

  • Keep scheduled follow-up visits for a birthmark or mole that is being monitored by a clinician or dermatologist.

What a Clinician May Do

A clinician may identify the type of birthmark or mole by examination, compare photographs or measurements, recommend observation, or arrange dermatology evaluation. Treatment is not needed for most harmless marks, but may be considered when a mark is at risk of causing a medical problem, is painful or bleeding, affects function, or is diagnostically uncertain.

Call Preparation

  • When the spot first appeared and what has changed: size, color, shape, surface, bleeding, pain, itching, or healing

  • Whether the child has fever, redness, drainage, injury to the area, or other illness symptoms

  • A clear photograph in good light, if safely obtained; do not share photographs of private areas

  • Any personal or close family history of melanoma, many unusual moles, or immune conditions

Related Guides

  • Rashes and Skin: When to Seek Care

  • Sun Safety and Sunburn in Children: When to Seek Care

  • Acne and Skin Breakouts: When to Seek Help

  • Warts and Molluscum: When to Seek Care

Sources and Medical Review

  • American Academy of Dermatology (AAD), 5 Signs Your Child's Mole Needs to Be Checked https://www.aad.org/public/diseases/a-z/signs-your-childs-mole-be-checked

  • American Academy of Dermatology (AAD), Birthmarks: Overview https://www.aad.org/public/diseases/a-z/birthmarks-overview

  • American Academy of Dermatology (AAD), Birthmarks: Tips for Managing https://www.aad.org/public/diseases/a-z/birthmarks-self-care

  • HealthyChildren.org (AAP), Baby Birthmarks and Rashes https://www.healthychildren.org/English/ages-stages/baby/bathing-skin-care/Pages/Your-Newborns-Skin-Birthmarks-and-Rashes.aspx