Why Are Fingers and Toes Harder to Repigment in Vitiligo?
Why Are Fingers and Toes Harder to Repigment in Vitiligo?
Vitiligo can improve unevenly. Color may begin to return on the face or body while patches on the fingers and toes show much less change. Fingertips and toe tips are among the areas that respond least well to light therapy. [1]
One important reason is the skin's supply of pigment-producing cells. Hair follicles hold a reserve of cells that can help restore color, but the smooth pads of the fingers and toes have no hair follicles. Understanding this difference helps explain why the location of a patch can matter so much. [2,3]
How skin regains pigment
Skin gets its color partly from melanin, a pigment made by cells called melanocytes. In vitiligo, the immune system attacks these cells. For color to return, functioning melanocytes need to repopulate the affected skin. [1]
Hair follicles can help with that process. Alongside the cells involved in hair growth, they contain immature pigment cells that can develop into melanocytes. These cells can multiply and move toward the skin's surface, where they help rebuild pigment. This is one reason repigmentation can appear as small spots around hairs. [2]
A 2015 study of human vitiligo skin found that narrowband UVB treatment was associated with changes consistent with the growth, movement, and maturation of these pigment cell precursors. The study helps explain a biological route for repigmentation; it does not mean every follicle will produce a visible response. [2]
Why finger pads and toe pads are different
That follicular route is unavailable in naturally hairless skin. Finger pads, toe pads, palms, and soles do not have hair follicles, so they lack this local reserve of pigment cell precursors. This is an important disadvantage when pigment cells have been lost through vitiligo. [2,3]
However, the fingers and toes are not covered by one uniform type of skin. A patch on the back of a finger and a patch on its pad can involve different anatomy.
|
Location |
Hair follicle supply |
|
Backs of the hands and feet, and some parts of the fingers and toes |
May contain hair follicles, which can provide a source of pigment cell precursors. |
|
Finger pads, toe pads, palms, and soles |
Naturally hairless, without a local hair follicle reservoir. |
[2,3]
This is why the broad description "vitiligo on the hands" can leave out information that matters. The exact part of the hand needs attention when discussing the chance of color returning. [1,4]
Other sources of pigment cells
The absence of hair follicles does not mean that healthy finger pads contain no melanocytes. Hairless skin normally has pigment-producing cells in its outer layer. After vitiligo develops, surviving melanocytes within a patch and cells at its pigmented border may offer other sources for repigmentation. [3]
How much these sources can contribute varies. A hairless patch therefore lacks one important route for recovery, but its location alone cannot prove that color will never return. Likewise, hair follicles elsewhere may lose their pigment cell reserves, so their presence cannot guarantee repigmentation. [3]
Hair follicles help explain the difference between body areas. The condition of the available cells, alongside the patient's disease and treatment, still affects what can happen in an individual patch. [1,3]
Why improvement on a hand may not include the fingertips
Clinical research illustrates why this distinction matters. In a pooled analysis of trials involving adults and adolescents aged 12 or older with nonsegmental vitiligo, people used ruxolitinib cream for up to 52 weeks. The researchers reported that repigmentation on the hands and feet occurred mainly on the backs of these areas, rather than at the tips of the fingers and toes. [4]
A hand can therefore show meaningful improvement while its fingertips remain affected. A result reported for the whole hand does not tell us that every part regained the same amount of color. Because this was a medication study, its findings also cannot predict the effect of a UVB device. [4]
Phototherapy research also shows differences by body area. A 2017 systematic review and meta-analysis of 35 prospective studies found that the face and neck generally responded more favorably, while hands and feet were among the most difficult sites. These group findings support realistic expectations, but they do not give a personal success rate for a particular fingertip or toe. [5]
What this means for your treatment discussion
If a finger or toe patch remains white, its exact location deserves a place in the treatment discussion. Your dermatologist can assess it alongside the type of vitiligo, whether it is spreading, and the response elsewhere. [1]
It also helps to distinguish two treatment goals: controlling the disease and restoring lost color. A patch that stops getting larger has not necessarily repigmented. These outcomes should be discussed separately, particularly in areas where restoring color is difficult. [1]
At your next review, ask about the specific area that concerns you: "What degree of color return is realistic for this fingertip or toe, and how will we judge whether my treatment is helping?"
Related reading
New Vitiligo Treatments in 2026: Where Does UVB Phototherapy Fit In?
How Long Does UVB Therapy Take to Work?
This article is for educational purposes and does not replace individual advice from a qualified dermatologist.
References
1. American Academy of Dermatology. Vitiligo: Diagnosis and treatment. Updated April 15, 2026. Accessed October 26, 2026.
https://www.aad.org/public/diseases/a-z/vitiligo-treatment
2. Goldstein NB, et al. Narrow Band Ultraviolet B Treatment for Human Vitiligo Is Associated with Proliferation, Migration, and Differentiation of Melanocyte Precursors. J Invest Dermatol. 2015;135(8):2068-2076. First published online March 30, 2015.
https://doi.org/10.1038/jid.2015.126
3. Falabella R. Vitiligo and the melanocyte reservoir. Indian J Dermatol. 2009;54(4):313-318.
https://doi.org/10.4103/0019-5154.57604
4. Passeron T, et al. Repigmentation by body region in patients with vitiligo treated with ruxolitinib cream over 52 weeks. J Eur Acad Dermatol Venereol. 2025;39(3):e251-e254. First published online July 16, 2024.
https://doi.org/10.1111/jdv.20236
5. Bae JM, et al. Phototherapy for Vitiligo: A Systematic Review and Meta-analysis. JAMA Dermatol. 2017;153(7):666-674.