Disclaimer: This information is intended for general educational purposes only and does not replace the professional advice of your GP or healthcare provider. Always consult a medical professional before making changes to your health regimen.
1. What is vitiligo?
Vitiligo is a chronic skin condition characterised by the development of well-defined white patches on the skin. This occurs because melanocytes, the specialised cells that produce melanin (the pigment responsible for skin, hair, and eye colour), are lost or stop functioning. Vitiligo is not contagious and does not cause physical pain, but it is a long-term condition that can vary widely in extent and progression between individuals.
2. What causes vitiligo to occur?
Vitiligo is classified as an autoimmune condition, meaning the immune system mistakenly targets and destroys melanocytes. Genetic factors are important, with around 20 percent of affected individuals having a family history of vitiligo or other autoimmune diseases. Environmental triggers such as severe sunburn, emotional stress, chemical exposure, or physical injury to the skin can contribute to onset or worsening, a process known as the Koebner phenomenon.
3. Who is most likely to develop vitiligo?
Vitiligo can affect people of any age, sex, or ethnic background. Although it is more visually noticeable in people with darker skin due to contrast, it occurs equally across all skin types. About half of cases begin before the age of 20, but vitiligo can develop at any stage of life, including adulthood.
4. What are the common physical signs?
The main sign is the appearance of flat, clearly defined white or pale patches on the skin. These commonly occur on the face, hands, feet, and around body openings such as the eyes, mouth, and nostrils. Hair growing within affected areas may turn white or grey, a feature known as poliosis, and this can involve scalp hair, eyebrows, eyelashes, or body hair.
5. Is vitiligo linked to other health conditions?
Yes. Vitiligo is associated with a higher risk of other autoimmune conditions, particularly autoimmune thyroid disease such as Hashimoto’s thyroiditis or Graves’ disease. There is also an increased association with conditions like type 1 diabetes, alopecia areata, pernicious anaemia, and rheumatoid arthritis. Because of this, periodic blood tests, especially for thyroid function, are often recommended.
6. How do doctors diagnose vitiligo?
Vitiligo is usually diagnosed clinically by a GP or dermatologist based on the appearance and distribution of skin changes. A Wood’s lamp, which emits ultraviolet light, may be used in a darkened room to make depigmented areas more visible. Under this light, vitiligo patches typically appear bright blue-white, helping to distinguish them from other causes of skin colour change.
7. What are the current treatment options?
There is no permanent cure for vitiligo, but several treatments can help restore pigment or limit progression. Topical corticosteroids and topical calcineurin inhibitors such as tacrolimus are commonly used, particularly for early or localised disease. From 2025–2026, topical JAK inhibitors have become a major advancement, showing strong evidence for repigmentation, especially on the face. For more widespread disease, narrowband UVB phototherapy is an established and effective option. In selected cases with stable vitiligo, surgical techniques such as skin grafting or melanocyte transplantation may be considered by specialists.
8. Is the progression of vitiligo predictable?
Vitiligo is unpredictable. In some people, patches remain stable for many years, while in others the condition may spread gradually or rapidly. Periods of stability and activity can alternate without clear triggers. Treatment tends to be more effective during active phases of the disease than in long-standing, stable patches.
9. How does sun exposure impact affected skin?
Skin affected by vitiligo lacks melanin and is therefore much more vulnerable to sunburn. Severe sunburn can not only damage the skin but may also trigger further spread of vitiligo. Regular use of high-SPF, broad-spectrum sunscreen is essential to protect affected areas and to reduce contrast caused by tanning of surrounding normal skin.
10. When should I consult a specialist?
You should see a GP or dermatologist if you notice new white patches, changes in existing areas, or rapid progression. Early assessment allows evaluation for associated autoimmune conditions and discussion of treatment options. Specialist input is also important if vitiligo is affecting confidence, mental health, or quality of life, as psychological support can be an important part of care.