Vitiligo explained: causes, symptoms and treatment

What vitiligo is

Vitiligo is a long-term skin condition in which areas of skin lose their natural colour and turn pale or white. Skin colour comes from a pigment called melanin, made by cells called melanocytes. In vitiligo these pigment-making cells stop working or are destroyed, so the affected skin no longer has its usual colour. It is widely thought to be an autoimmune condition, meaning the body's own immune system mistakenly attacks the pigment cells, though the exact cause is not fully understood, and it can run in families. Vitiligo can begin at any age and affects people of all skin tones, although the patches are usually more noticeable on darker skin. Importantly, vitiligo is not contagious — it cannot be caught or passed on — and it is not caused by anything the person has done.

The symptoms it causes

The main feature of vitiligo is patches of skin that lose their colour and become paler or white, often with a fairly clear edge against the surrounding skin. These patches can appear anywhere, but commonly affect the face, hands, arms and feet, and areas around body openings, as well as places that have been injured. Sometimes the hair growing in an affected area also turns white or grey. The patches are usually flat and are not sore, itchy or scaly, though the pale skin has less natural protection from the sun and burns more easily. Vitiligo varies a lot: in some people it stays limited to one or a few small areas, while in others it spreads more widely over time. It may progress slowly, stay stable for long periods, or occasionally partly repigment. It does not affect general health.

How it is diagnosed

Vitiligo is usually diagnosed by a doctor examining the skin and recognising the typical pale, well-defined patches where pigment has been lost. Often the appearance alone is enough to make the diagnosis, sometimes helped by looking at the skin under a special ultraviolet light, which can make the patches show up more clearly. A doctor may ask about family history and about the pattern and progression of the patches. Because vitiligo is linked with autoimmune activity, it is sometimes associated with other autoimmune conditions, such as certain thyroid problems, so a doctor may occasionally suggest blood tests to check for these. A small skin sample is only rarely needed. Referral to a skin specialist may be arranged, particularly to discuss treatment options or where the diagnosis is less clear. Reaching a clear diagnosis helps guide care and provides reassurance.

How it is managed

There is no guaranteed cure for vitiligo, and treatment aims to even out skin tone, encourage some colour to return where possible, and support wellbeing; results vary from person to person. Some people choose not to have active treatment at all, particularly if patches are few or not troubling them, and simply protect the skin. For those who want treatment, options used under medical guidance include creams that calm the immune activity in the skin and forms of light therapy that can encourage pigment to return, especially on certain areas. These treatments take time and do not always work fully. Camouflage make-up and skin dyes can help cover patches and are valued by many people. Because the pale skin burns easily, sun protection is important. Newer treatments continue to be developed, and a specialist can advise on what may suit an individual.

Living with vitiligo

Vitiligo does not affect physical health, but because it changes how the skin looks, it can affect confidence, mood and self-image, and this emotional side deserves attention just as much as the skin itself. It can help to learn about the condition, to know that it is common and not your fault, and to connect with others through patient organisations who understand what it is like. Practical steps include protecting the pale patches from the sun with high-factor sunscreen and clothing, since they burn easily and lack natural protection, and, if you wish, using camouflage products to even out skin tone. Some people embrace their vitiligo openly, while others prefer to cover it, and both choices are entirely valid. If vitiligo is affecting your mood or confidence, it is worth talking to your GP, who can offer support and, where helpful, refer you for further help.