White Patches on Face: Pityriasis Alba, Versicolor or Vitiligo?

Most white or light patches on the face and body in India are not vitiligo. In children, pale, slightly dry patches on the cheeks are usually pityriasis alba, and in teenagers and young adults, pale or light brown fine scaly patches on the chest, back, neck and upper arms are usually tinea versicolor, a harmless overgrowth of a yeast that lives on everyone’s skin.

Vitiligo looks different. It causes milk white or chalk white patches with sharp edges and no scaling. Because the three can look similar to a worried parent, a short examination by a dermatologist is the fastest way to stop guessing.

Why do white patches cause so much worry in India?

In many Indian families, any white patch raises fear of vitiligo, which is still surrounded by stigma. As a result, children are sometimes taken to multiple practitioners, given strong creams, or told to avoid certain foods. In reality, the two most common causes of pale patches are pityriasis alba and tinea versicolor, both of which are common and manageable. If vitiligo is the concern, our guide to vitiligo causes, treatment and myths explains that condition in detail.

What is pityriasis alba?

Pityriasis alba is a mild, common skin condition that mainly affects children and adolescents, roughly between 3 and 16 years of age. It is more noticeable on brown and darker skin, which is why it is so often seen in Indian children.

Typical features include:

• Pale, round or oval patches with soft, poorly defined edges
• Fine, dry scaling on the surface, sometimes with mild pinkness at the start
• Sites: mostly the cheeks and chin, sometimes the neck, shoulders and upper arms
• Little or no itch
• More obvious after summer or a holiday, because the surrounding skin tans while the patch does not

The exact cause is not known, but pityriasis alba often occurs alongside dry skin and atopic dermatitis (eczema). DermNet notes that it clears on average after about a year, with a range from a few months to two or three years, and the colour returns to normal.

A study from a hospital in South India found dermoscopy, a handheld magnified skin examination, helpful in confirming pityriasis alba in children and separating it from look alike conditions.

What is tinea versicolor?

Tinea versicolor, also called pityriasis versicolor, is caused by an overgrowth of Malassezia yeast. This yeast normally lives on the skin of almost everyone. In hot, humid weather, with heavy sweating and oily skin, it can multiply and change skin colour.

Typical features include:

• Pale, pinkish or light brown patches that may join together into larger areas
• Fine, powdery scaling that becomes more obvious when the skin is gently scratched
• Sites: upper back, chest, shoulders, neck and upper arms, and occasionally the face
• Mild itch in some people, especially when sweating
• Common in teenagers and young adults, and more common in men
• Recurs in summer and monsoon in many people

Tinea versicolor is not caused by poor hygiene and is not considered contagious in the usual sense. It is closely related to the yeast that causes fungal acne (Malassezia folliculitis), and some people have both.

How is vitiligo different?

Vitiligo is an autoimmune condition in which pigment cells are lost from areas of skin. Its patches are usually:

• Milk white or chalk white, not just lighter
• Sharply defined, with clear borders
• Smooth, with no scaling
• Often around the eyes, mouth, fingers, wrists, knees or genitals
• Sometimes associated with white hair in the patch

Vitiligo is not contagious and is not caused by food combinations such as fish and milk.

How do these white patches compare?

Feature	Pityriasis alba	Tinea versicolor	Vitiligo
Usual age	Children and teens	Teens and young adults	Any age
Colour	Off white, pale	Pale, pink or light brown	Chalk white
Edges	Blurred	Fairly defined, may merge	Sharp
Surface	Fine dry scale	Fine powdery scale	Smooth, no scale
Common sites	Cheeks, chin, arms	Chest, back, neck, shoulders	Face, hands, joints, lips
Cause	Linked to dry skin and atopy	Malassezia yeast overgrowth	Autoimmune loss of pigment cells
Outlook	Fades on its own over months	Treatable, may recur in heat	Long term, treatable

Other causes of light patches exist too, such as post inflammatory hypopigmentation after eczema or injury, small white spots on the shins called idiopathic guttate hypomelanosis, and, rarely, conditions such as leprosy that need medical examination. This is why a persistent patch, especially one with reduced sensation, should not be ignored.

How does a dermatologist confirm the cause?

Usually with simple, painless checks:

1. Examination in good light of the colour, border and scaling
2. Wood lamp examination, a special ultraviolet light. Vitiligo looks bright white, and tinea versicolor may show a yellow green glow
3. Dermoscopy to look at the patch under magnification
4. KOH test, a gentle skin scraping examined under the microscope to look for yeast
5. Biopsy, only rarely, when the picture is unclear

How is pityriasis alba managed?

Pityriasis alba often needs reassurance more than strong treatment. Helpful steps include:

• Gentle cleansing with a mild, soap free cleanser instead of harsh soaps
• A plain, fragrance free moisturiser once or twice daily, especially after bathing
• Sun protection with a suitable sunscreen, so the surrounding skin does not tan and make the patch stand out. See our sunscreen guide for India
• Avoiding scrubbing, lemon, bleaching or turmeric pastes on the face

If there is redness or itch, your dermatologist may prescribe a mild anti inflammatory cream for a short time. Please do not apply steroid creams from the chemist on your child’s face without advice. If your child also has eczema, our guide to eczema in adults and children may help.

How is tinea versicolor treated?

Treatment is with antifungal medicines chosen by your doctor. Your dermatologist may suggest:

• Antifungal shampoos or lotions applied to the affected skin and left on for a few minutes before rinsing
• Antifungal creams for small areas
• Oral antifungal medicines for extensive or frequently recurring cases, after considering your health and other medicines
• Occasional preventive use of an antifungal wash during the hot months if it keeps coming back

An important point that surprises many people: the yeast may be cleared, but the pale colour can stay for weeks or months afterwards. This does not necessarily mean the treatment failed. Over time, with sun protection, the skin colour usually evens out.

Daily habits that help prevent recurrence:

• Bathe after heavy sweating and dry the skin well
• Prefer loose, breathable cotton clothing in humid weather
• Avoid heavy oils and greasy creams on the chest and back
• Change out of sweaty gym or work clothes quickly

Do home remedies help white patches?

Common home remedies such as lemon juice, raw garlic, baking soda, toothpaste or undiluted vinegar can irritate the skin. Irritation may leave dark or light marks that last longer than the original patch. Prolonged sun exposure to tan the patches also tends to backfire, because the normal skin darkens more. Gentle care and an accurate diagnosis work better.

When to see a dermatologist

Please see a dermatologist if:

• A patch is milk white, sharply defined or spreading
• Patches appear around the eyes, lips, fingers or genitals
• There is white hair growing within a patch
• A patch feels numb or less sensitive than the skin around it
• Pale patches keep returning every summer despite treatment
• You are not sure what the patch is, or a child has many patches
• Someone has suggested strong creams, injections or diet restrictions without a clear diagnosis

A quick, calm examination can save months of worry. If you would like help working out what a white patch is, Dr. Maria offers online consultations where you can share clear photos taken in daylight and discuss the next steps.