Piebaldism: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Piebaldism?
A dermatologist, a doctor who treats skin, hair, and nails, and a geneticist, a doctor who treats inherited conditions, may help with piebaldism. Piebaldism is a condition with patches of skin and hair that are lighter than normal. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is piebaldism?
In piebaldism, cells called melanocytes are missing from some areas of the skin and hair. Melanocytes make the pigment melanin, which gives hair, eyes, and skin their color. Piebaldism is a rare skin disorder that is present from birth and changes skin color. It is not known how many people have piebaldism.
Symptoms
About 90 percent of people with piebaldism have a white section of hair near the front hairline, called a white forelock. The eyelashes, the eyebrows, and the skin under the forelock may also be unpigmented, which means without color.
People with piebaldism usually have other patches without color on the skin, often matching on both sides of the body. There may be spots or patches of colored skin inside or around the edges of the light areas. The light patches often show up on the forehead, chest, belly, upper arms, and legs.
In most cases, the unpigmented areas are present at birth and do not increase in size or number. Symptoms may start to appear in newborns and infants. The patches are at increased risk of sunburn and skin cancer related to too much sun exposure. Some people with piebaldism are self-conscious about how the patches look. The patches may be more noticeable in darker-skinned people.
Less common features include eyes of different colors, an enlarged colon that lacks nerve cells, and hearing loss. Most people with piebaldism do not have these features.
Causes and who gets it
Piebaldism can be caused by changes, called mutations, in the KIT and SNAI2 genes. The KIT gene gives instructions for making a protein that helps cells send signals. The KIT gene changes that cause piebaldism lead to a KIT protein that does not work. Losing KIT signals is thought to disrupt how melanocytes grow, divide, and move before birth. SNAI2 gene changes that cause piebaldism probably reduce the making of a protein called snail 2.
Piebaldism may also be a feature of other conditions, such as Waardenburg syndrome. Those conditions have other genetic causes and more signs and symptoms. It passes through families in an autosomal dominant pattern. This means one copy of the changed gene in each cell is enough to cause the disorder.
How doctors diagnose it
Piebaldism is sometimes mistaken for vitiligo, which also causes patches of skin without color. People are not born with vitiligo but get it later in life. Vitiligo is not caused by specific gene changes. In vitiligo, the immune system appears to damage the melanocytes in the skin, for unknown reasons.
If a diagnosis stays unclear, a university hospital or care center with many specialists may help.
Treatment
The patches have a higher risk of sunburn and skin cancer from too much sun. Ask a doctor how to care for them. Aside from sun risk and feeling self-conscious, MedlinePlus Genetics says piebaldism has no effect on health. A primary care provider can be your main contact and help coordinate care with other medical professionals.
When to see a doctor
See a doctor about light patches of skin or hair, since piebaldism is sometimes mistaken for vitiligo. Patches without color have a higher risk of sunburn and skin cancer from too much sun, so ask a doctor about any worries.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can act as your main point of contact and help coordinate care with a dermatologist or geneticist.
Common questions
Is piebaldism the same as vitiligo?
No, they are different conditions, but they are sometimes mistaken for each other. People are not born with vitiligo but get it later in life.
Is piebaldism inherited?
Yes, it passes through families in an autosomal dominant pattern. This means one copy of the changed gene in each cell is enough to cause the disorder.
Do the light patches get bigger over time?
In most cases, no, because the unpigmented areas are present at birth and do not increase in size or number.
Does piebaldism harm a person's health?
For most people, piebaldism has no effect on health aside from sun risk and feeling self-conscious about the patches. The unpigmented patches are at increased risk of sunburn and skin cancer related to too much sun exposure. Piebaldism can also be a feature of other conditions that have more signs and symptoms.
Which genes cause piebaldism?
Changes in the KIT and SNAI2 genes can cause piebaldism.
Sources
- MedlinePlus Genetics - Piebaldism
- NIH Genetic and Rare Diseases Information Center - Piebaldism
- National Organization for Rare Disorders - Piebaldism
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
