Small White Spots on Skin Pictures: 9 Causes Compared

About this article

Medically reviewed

Written by

Dr Paul Watson

Medically reviewed by

Dr Han Simpson

Published

July 30, 2026

Medical review date

September 8, 2026

Evidence searched through

September 8, 2026

Next review due

September 8, 2027

Intended audience

General Readers & Patients

Geographic scope

Worldwide

Conflicts of interest

None declared.

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Website Owner

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Small white spots on the skin are most commonly caused by sun-related pigment loss, a superficial fungal condition, dry skin, previous inflammation or vitiligo. The appearance of the spots—including whether they are flat, raised, scaly, itchy or spreading—can help distinguish between the possible causes. This is why we have created a small white spots on skin pictures guide to help you out.

For example:

• Tiny, smooth white dots on the arms or legs may be idiopathic guttate hypomelanosis, also called white sunspots.
• Pale, finely scaly patches on the chest or back may be pityriasis versicolor.
• Dry white patches on a child’s face are often pityriasis alba.
• Clearly defined milk-white patches that are spreading may indicate vitiligo.
• Hard, raised white dots around the eyes are more likely to be milia.

The pictures and comparisons below can help you understand what different white spots may look like. However, photographs cannot provide a definite diagnosis because several skin conditions can appear similar.

Quick medical advice: Speak to a GP or dermatologist if white spots are spreading, affecting the genitals, associated with pain or numbness, or changing in appearance.

What Causes Small White Spots on the Skin?

White spots appear when an area of skin contains less melanin than the surrounding skin. Melanin is the pigment responsible for skin colour.

Doctors use two important terms:

• Hypopigmentation: The skin has less pigment than normal and appears lighter.
• Depigmentation: Pigment has been completely lost, producing a more distinctly white area.

Not every white-looking spot is caused by pigment loss. Milia and keratosis pilaris, for example, are raised white bumps rather than changes in skin colour.

Small white spots on skin: picture comparison chart

What the spots look like	Typical location	Most likely cause	Treatment usually considered
Tiny, flat, smooth white dots	Shins, forearms and chest	Idiopathic guttate hypomelanosis	Sun protection; treatment usually unnecessary
Pale, round patches with fine scale	Chest, back, neck and upper arms	Pityriasis versicolor	Antifungal wash, shampoo or cream
Dry, poorly defined pale patches	Child’s cheeks and upper arms	Pityriasis alba	Moisturiser and sun protection
Smooth, sharply outlined white patches	Face, hands, knees and body folds	Vitiligo	Prescription creams or light treatment
Pale areas where a rash previously occurred	Anywhere	Post-inflammatory hypopigmentation	Treat the original inflammation
Tiny, hard, raised white bumps	Eyelids, cheeks and forehead	Milia	Often no treatment; professional removal
Numerous rough follicular bumps	Upper arms and thighs	Keratosis pilaris	Moisturisers and keratolytic skin products
White, itchy or fragile patches	Genitals or around the anus	Lichen sclerosus	Prescription topical corticosteroid
Pale patches with reduced sensation	Limbs, face or trunk	Less common nerve-related disease	Prompt medical investigation

Pictures of Small White Spots on Different Parts of the Body

The location of white spots can provide a useful diagnostic clue.

Small white spots on the arms

Tiny white spots scattered across the forearms are commonly caused by idiopathic guttate hypomelanosis. Rough white bumps on the backs of the upper arms are more consistent with keratosis pilaris.

Pityriasis versicolor can also affect the upper arms, particularly when similar patches are present on the chest or back.

Small white spots on the legs

Smooth white dots on the shins are a classic presentation of idiopathic guttate hypomelanosis. These spots are usually painless, do not scale and become more noticeable after the surrounding skin tans.

White marks can also remain after insect bites, eczema, injuries or other inflammation.

Small white spots on the face

Possible causes of facial white spots include:

• Pityriasis alba, especially in children
• Milia around the eyes or cheeks
• Vitiligo around the mouth or eyes
• Post-inflammatory pigment changes after eczema or acne
• Superficial fungal conditions

Dry, poorly defined patches are more suggestive of pityriasis alba, while completely white, clearly outlined patches require assessment for vitiligo.

Small white spots on the chest and back

Pityriasis versicolor is a common explanation for multiple pale patches on the chest, upper back and shoulders. The patches may have a very fine scale and can merge into larger areas.

Progressive macular hypomelanosis is another possible cause of non-scaly pale patches on the trunk. It requires professional diagnosis because it can resemble pityriasis versicolor and other pigment conditions.

Small white spots around the eyes

Raised white dots around the eyes are frequently milia. These small keratin cysts feel firm and do not disappear when the skin is stretched.

Flat white patches around the eyes may have a different cause, including vitiligo, and should be examined if they are expanding.

White spots on genital skin

Itchy, fragile or wrinkled white genital patches may be caused by lichen sclerosus. This condition requires medical treatment to reduce symptoms and prevent scarring.

Do not assume that genital white patches are a fungal infection. Arrange an examination with a GP or sexual health clinician, especially if there is pain, bleeding, skin splitting or difficulty retracting the foreskin.

1. Idiopathic Guttate Hypomelanosis: Tiny White Sunspots

Idiopathic guttate hypomelanosis is a common, harmless cause of small white spots on sun-exposed skin. It is sometimes described as “white freckles” or “white sunspots.”

What does it look like?

The spots are normally:

• Flat and smooth
• Round, oval or slightly irregular
• Approximately 2–5 mm across
• Porcelain-white or noticeably paler than surrounding skin
• Scattered rather than joined together
• Painless and not itchy

They most often appear on the shins, forearms and V-shaped area of the chest.

What causes white sunspots?

The exact cause is not fully understood. Skin ageing, cumulative ultraviolet exposure and genetic factors are all thought to contribute.

Idiopathic guttate hypomelanosis becomes more common with age but can occasionally affect younger adults. It is especially noticeable on tanned or naturally darker skin.

Is it dangerous?

No. Idiopathic guttate hypomelanosis is benign and does not develop into skin cancer.

However, a spot that grows, bleeds, crusts or becomes raised should not automatically be attributed to this condition.

Treatment

Treatment is not usually required. Recommended measures include:

• Using broad-spectrum SPF 30 or higher
• Avoiding tanning beds
• Limiting unnecessary sun exposure
• Applying moisturiser if the surrounding skin is dry

Dermatologists occasionally use prescription creams, cryotherapy, chemical peels or laser procedures for cosmetic reasons. Results are inconsistent, and treatment can sometimes create further pigment changes.

2. Pityriasis Versicolor: White Fungal Patches

Pityriasis versicolor—also known as tinea versicolor—is caused by an overgrowth of Malassezia yeast. This yeast normally lives harmlessly on human skin but can multiply under warm, humid or oily conditions.

What does pityriasis versicolor look like?

It may cause:

• Multiple round or oval patches
• White, pale, pink, tan or brown discolouration
• A fine, powdery surface scale
• Mild itching
• Patches that merge into larger areas
• Skin that does not tan normally

The chest, upper back, neck, shoulders and upper arms are commonly affected.

On brown or black skin, the patches are often paler than the surrounding skin. On white skin, they may appear pale brown, pink or red rather than white.

Is pityriasis versicolor contagious?

It is not generally considered contagious. The responsible yeast is naturally present on most people’s skin.

Treatment

A pharmacist may recommend an antifungal product containing an appropriate ingredient such as ketoconazole or selenium sulphide. Products come as shampoos, washes and creams, so follow the instructions for the specific treatment supplied.

A doctor may prescribe a different topical treatment or oral antifungal medicine if the condition is severe, widespread or recurrent.

Oral antifungal medicines can cause side effects and interact with other medications. They should not be taken without professional assessment.

Why are the white spots still visible after treatment?

Successful antifungal treatment stops the yeast overgrowth, but normal pigmentation may take several weeks or months to return. Persistent discolouration does not necessarily mean the infection remains active.

3. Pityriasis Alba: Dry White Patches in Children

Pityriasis alba is a mild inflammatory skin condition that mainly affects children and teenagers. It is commonly associated with dry skin, sensitive skin or eczema.

What does it look like?

Typical features include:

• Round or oval pale patches
• Poorly defined borders
• Mild dryness or fine scale
• Little or no itching
• Patches on the cheeks, chin, neck or upper arms

The patches may initially look pink before becoming lighter than the surrounding skin.

Treatment

Pityriasis alba normally clears without treatment, although normal pigmentation may take months or occasionally longer to return.

Helpful measures include:

• Applying fragrance-free moisturiser regularly
• Using a gentle emollient cleanser
• Avoiding fragranced soaps and scrubs
• Protecting the skin with sunscreen

A clinician may recommend a short course of a mild anti-inflammatory cream if the patches are inflamed or itchy. Ask a pharmacist or doctor before using steroid cream on a child’s face.

4. Vitiligo: Clearly Defined White Patches

Vitiligo is an autoimmune pigment condition. It develops when melanocytes—the cells that produce melanin—are damaged or destroyed.

What does vitiligo look like?

Vitiligo usually causes:

• Smooth, milk-white patches
• Clearly defined borders
• No surface scale
• Gradual enlargement or development of new patches
• Symmetrical involvement in some people
• White or grey hair within affected areas

Common locations include the hands, fingers, face, skin around the mouth and eyes, armpits, groin, knees and elbows.

How can you distinguish vitiligo from fungal white spots?

Feature	Vitiligo	Pityriasis versicolor
Colour	Usually milk-white	Pale, pink, brown or white
Surface	Smooth	May have fine scale
Typical location	Face, hands, joints and body folds	Chest, back, neck and shoulders
Itching	Usually absent	Sometimes mildly itchy
Borders	Often clearly defined	May be less distinct
Cause	Autoimmune pigment loss	Yeast overgrowth

This comparison is not a substitute for examination. A doctor may use a Wood’s lamp or take a superficial skin scraping when the diagnosis is uncertain.

Vitiligo treatment

Treatment options depend on the size, location and duration of the patches and may include:

• Broad-spectrum sun protection
• Skin camouflage products
• Prescription topical corticosteroids
• Topical calcineurin inhibitors
• Specialist narrowband ultraviolet B treatment
• Other specialist prescription treatments for eligible patients

Treatment tends to work better on the face and trunk than on the hands and feet. Newer patches may respond better than long-established areas.

Prescription steroids and light therapy require medical supervision. See the NHS vitiligo guidance for further information.

5. Post-Inflammatory Hypopigmentation

Post-inflammatory hypopigmentation occurs when the skin produces less pigment after inflammation, infection or injury.

Possible triggers include:

• Eczema
• Psoriasis
• Acne
• Insect bites
• Burns
• Skin infections
• Cuts or other injuries
• Aggressive cosmetic procedures

The pale mark usually appears in the same location as the original skin problem. Borders are often less defined than those seen in vitiligo.

Treatment

Treating the original skin condition is the priority. Once inflammation is controlled, pigmentation commonly returns gradually over weeks or months.

Use gentle skin care and daily sunscreen. Avoid bleaching creams, harsh acids and aggressive exfoliation, which can trigger more inflammation.

6. Milia: Hard, Raised White Spots

Milia are small keratin-filled cysts commonly found around the eyes, nose, forehead and cheeks.

They are not areas of lost pigmentation. Unlike the other conditions in this guide, milia are raised and feel like tiny, firm grains beneath the skin.

Milia are:

• Usually 1–2 mm across
• White or yellowish
• Firm and dome-shaped
• Not normally itchy or painful
• Common in newborn babies and adults

Treatment

Newborn milia normally disappear without treatment. Adult milia may also resolve naturally but can persist.

Do not squeeze, pierce or cut milia at home. This can cause infection, bleeding and scarring, particularly around the eyes. Persistent milia can be assessed and removed by an appropriately qualified professional.

7. Keratosis Pilaris: Rough White Bumps

Keratosis pilaris occurs when keratin blocks the openings of hair follicles. It causes clusters of tiny white, skin-coloured, pink or red bumps.

The skin may feel rough or similar to sandpaper. Common locations include:

• Backs of the upper arms
• Fronts of the thighs
• Cheeks
• Buttocks

The condition is harmless and often runs in families.

Treatment

Treatment cannot permanently cure keratosis pilaris, but it can make the skin feel smoother.

Options include:

• Regular use of fragrance-free moisturiser
• Products containing urea
• Lactic-acid moisturisers
• Salicylic-acid products when suitable
• Gentle cleansing with lukewarm water

Avoid picking or vigorous scrubbing. Strong acids may irritate sensitive skin and may not be appropriate for babies or young children.

8. Lichen Sclerosus

Lichen sclerosus is a long-term inflammatory skin condition that commonly affects genital and perianal skin.

It may produce:

• White or ivory-coloured patches
• Intense itching
• Fragile or easily damaged skin
• Wrinkled skin texture
• Painful cracks or bleeding
• Pain during sex
• Tightening of the foreskin

Treatment

Lichen sclerosus requires a medical diagnosis. It is usually treated with a prescription-strength topical corticosteroid.

Appropriate treatment helps control symptoms and reduces the risk of scarring and other complications. Read the NHS lichen sclerosus guidance or arrange an appointment with a GP.

9. Less Common Causes of White Skin Spots

Less common possibilities include:

Halo naevus

A halo naevus is a mole surrounded by a circular area of lighter or white skin. It is often harmless, particularly in children and young adults, but a new or changing mole should be examined.

Progressive macular hypomelanosis

This causes non-scaly, poorly defined pale patches, mainly on the trunk. It can be confused with pityriasis versicolor and usually requires examination by a dermatologist.

Chemical leukoderma

Repeated contact with certain chemicals can damage pigment-producing cells. The white patches usually correspond to areas of exposure, such as the hands or face.

Scarring

Deep injury, burns or inflammatory skin disease can permanently damage melanocytes and produce a pale or white scar.

Reduced sensation within a pale patch

A pale patch that feels numb or has reduced sensitivity requires medical investigation. Certain uncommon infections and nerve-related conditions can cause both pigment change and sensory loss.

Are Small White Spots Caused by Vitamin Deficiency?

Small white skin spots are not usually caused by a vitamin deficiency.

They are frequently—and incorrectly—attributed online to low levels of vitamin D, calcium or zinc. A photograph cannot diagnose any nutritional deficiency.

Vitamin B12 deficiency can occasionally be associated with pigmentation abnormalities, but it normally causes other symptoms or blood-test findings. These may include fatigue, weakness, mouth problems or neurological symptoms.

Do not begin high-dose supplements solely because you have white spots. A clinician can arrange appropriate blood tests if your history suggests a nutritional, thyroid or autoimmune disorder.

Can Small White Spots Be Skin Cancer?

Small, flat, stable areas of reduced pigmentation are not a typical presentation of skin cancer. However, some skin cancers can appear pale, pearly, waxy or scar-like.

Arrange an examination if a spot:

• Continues to grow
• Bleeds or repeatedly crusts
• Develops a persistent ulcer
• Looks pearly or translucent
• Contains visible blood vessels
• Becomes painful or tender
• Changes colour, shape or texture
• Looks different from your other marks

A changing lesion should not be diagnosed from an online photograph.

How Doctors Diagnose Small White Spots

A healthcare professional will consider more than the colour of the spots. Important diagnostic clues include:

• Whether the spots are flat or raised
• Whether scale is present
• The sharpness of the borders
• Which parts of the body are affected
• Whether the spots itch or hurt
• How quickly they are spreading
• Whether another rash appeared first
• Whether sensation is normal

Tests may include:

Wood’s lamp examination

A Wood’s lamp emits ultraviolet light that can make certain pigment abnormalities and infections easier to recognise. The test is painless and can help distinguish vitiligo from some other causes.

Skin scraping

A clinician may gently scrape the surface of a scaly patch and examine the sample for fungal elements.

Dermoscopy

A dermatoscope magnifies the skin and allows closer examination of pigment patterns, scale and blood vessels.

Skin biopsy

A small skin sample is occasionally required when the diagnosis remains uncertain or a less common condition is suspected.

Treatment for Small White Spots on the Skin

Treatment depends entirely on the cause.

Cause	Common treatment approach	Will pigment return?
Idiopathic guttate hypomelanosis	Usually no treatment; sunscreen	Often remains visible
Pityriasis versicolor	Topical antifungal treatment	Usually, but it may take months
Pityriasis alba	Moisturiser and sunscreen	Usually returns gradually
Vitiligo	Prescription creams or light treatment	Variable
Post-inflammatory hypopigmentation	Control the original inflammation	Often returns gradually
Milia	Observation or professional removal	Not a pigment disorder
Keratosis pilaris	Moisturiser and suitable keratolytics	Texture improves; recurrence is common
Lichen sclerosus	Prescription topical corticosteroid	Treatment controls disease and symptoms

Avoid starting strong steroid, bleaching or antifungal treatments until the likely diagnosis is known.

Safe Skin-Care Advice While Waiting for a Diagnosis

You can usually take the following low-risk measures:

1. Use a fragrance-free moisturiser once or twice daily.
2. Apply broad-spectrum SPF 30 or higher to exposed areas.
3. Avoid deliberate tanning and sunbeds.
4. Do not scratch, scrape or bleach the spots.
5. Avoid applying household acids or wart treatments.
6. Photograph the spots periodically in consistent lighting.
7. Record whether they are spreading, itching or developing scale.
8. Ask a pharmacist before using an antifungal product.

Photographs taken with flash can exaggerate pigment differences. Use the same location, distance and natural lighting when monitoring changes.

When Should You See a Doctor?

Arrange a GP or dermatologist appointment if:

• The white spots are spreading
• New patches continue to appear
• The cause remains uncertain
• The patches are completely white and clearly defined
• The affected hair is turning white
• The skin is itchy, painful, scaly or inflamed
• Pharmacy treatment has not worked
• Genital skin is affected
• The condition is affecting your confidence or wellbeing
• A child has widespread or persistent pigment loss

Seek prompt medical advice if a pale patch has reduced sensation, develops blisters, becomes severely painful, looks infected or is accompanied by fever.

Frequently Asked Questions

What is the most common cause of tiny white spots on the arms and legs?

Idiopathic guttate hypomelanosis is a common cause of smooth, tiny white spots on sun-exposed forearms and shins, particularly in adults. The condition is harmless and becomes more common with age.

What do fungal white spots look like?

Pityriasis versicolor usually causes multiple pale or discoloured patches on the chest, back, shoulders or neck. The patches may have a fine scale, join together and become more visible after tanning.

How can I tell vitiligo from white sunspots?

Vitiligo usually produces larger, clearly defined milk-white patches that may expand. White sunspots are generally much smaller, remain separate and occur mainly on sun-exposed arms and legs. A Wood’s lamp examination can help distinguish them.

Why do I suddenly have white spots after tanning?

Tanning can reveal areas that contain less pigment or do not tan normally. Common explanations include pityriasis versicolor, idiopathic guttate hypomelanosis and post-inflammatory hypopigmentation.

Can stress cause white spots?

Stress does not normally cause small white spots directly. However, it can aggravate inflammatory or autoimmune skin conditions in some people. New white patches still require an appropriate diagnosis.

Can white spots disappear naturally?

Pityriasis alba and post-inflammatory hypopigmentation often improve naturally. Pigmentation after pityriasis versicolor usually returns once the yeast overgrowth has been treated, but recovery can take months. Vitiligo and idiopathic guttate hypomelanosis may persist.

Should I put antifungal cream on white spots?

Only use antifungal treatment when a pharmacist or clinician thinks a fungal condition is likely. Antifungal creams will not treat vitiligo, milia, keratosis pilaris or white sunspots.

Are small white spots contagious?

Most causes are not contagious. Vitiligo, pityriasis alba, white sunspots, milia and keratosis pilaris cannot be passed to another person. Pityriasis versicolor involves an overgrowth of yeast normally present on the skin and is not generally considered contagious.

What are tiny white spots that feel hard?

Tiny, firm, raised white spots on the face—particularly around the eyes—are often milia. Rough clusters on the upper arms or thighs are more likely to be keratosis pilaris.

When should I worry about a white skin spot?

Have the area examined if it grows, bleeds, crusts, ulcerates, becomes painful, loses sensation or looks substantially different from your other spots. Genital white patches also require medical assessment.

Doctor’s Summary

The appearance and location of small white spots provide the most useful initial clues:

• Smooth pinpoint dots on the forearms or shins: Consider idiopathic guttate hypomelanosis.
• Scaly pale patches on the chest or back: Consider pityriasis versicolor.
• Dry facial patches in a child: Consider pityriasis alba.
• Sharply defined milk-white patches: Consider vitiligo.
• Pale areas following a rash: Consider post-inflammatory hypopigmentation.
• Raised hard facial dots: Consider milia.
• Itchy or fragile genital patches: Seek assessment for lichen sclerosus.

Do not rely on small white spots on skin pictures alone to make a diagnosis. If the spots are spreading, changing or causing symptoms, arrange an examination with a pharmacist, GP or dermatologist.

This article provides general educational information and does not replace diagnosis or treatment from a qualified healthcare professional.