Raised white spots on the skin are common, and most are harmless. The first useful question is simple: can you feel the spot? Raised bumps, such as milia, keratosis pilaris and molluscum contagiosum, are different conditions from flat white patches, such as sunspots, pityriasis versicolor and vitiligo. This guide helps you understand the options. It cannot diagnose you, and several of these conditions look alike, so a clinician should check anything new, spreading or worrying.
Quick Answer
Raised white spots are most often milia (tiny pearly bumps of trapped dead skin), keratosis pilaris (rough bumps on the upper arms and thighs) or molluscum contagiosum (dome-shaped bumps with a central dimple, caused by a virus). Flat white patches have different causes, including idiopathic guttate hypomelanosis, pityriasis versicolor, pityriasis alba and vitiligo. See a doctor if a spot grows, bleeds, changes or does not heal, if white patches appear on the genitals, or if spots spread quickly.
Raised White Spots vs Flat White Patches
Run a fingertip over the area. A bump you can feel points to one group of conditions. A smooth, flat color change points to another. The table below compares the most common causes.
| Condition | Raised or flat | Typical look | Common sites | Contagious? |
|---|---|---|---|---|
| Milia | Raised | Tiny, firm, pearly-white bumps | Eyelids, cheeks, forehead | No |
| Keratosis pilaris | Raised | Rough, sand-grain bumps, sometimes pinkish | Backs of upper arms, thighs | No |
| Molluscum contagiosum | Raised | Small, firm, dome-shaped, central dimple | Torso, armpits, backs of knees, groin | Yes, a virus |
| Whiteheads (acne) | Raised | Small closed bumps over blocked pores | Face, chest, back | No |
| Idiopathic guttate hypomelanosis | Flat | Smooth white spots, usually 2 to 5 mm | Shins, forearms, V of chest | No |
| Pityriasis versicolor | Flat, may be scaly | Patches paler or darker than nearby skin | Chest, upper back, upper arms, neck | No |
| Pityriasis alba | Flat, slightly scaly at first | Pale round or oval patches | Face, upper arms, neck | No |
| Vitiligo | Flat | Milky white patches with no pigment | Face, neck, hands, skin creases | No |
| Lichen sclerosus | Flat or crinkled | Itchy, white, smooth or crinkled patches | Vulva, anus, foreskin, penis | No |
If your spots are red, purple or brown rather than white, they belong to a different group. Our guides to common skin rashes and ecchymosis and bruising cover those.
Causes of Raised White Spots
Milia
Milia are tiny white bumps or small cysts. They form when dead skin gets trapped in small pockets near the surface. They are not fluid-filled, and they are not acne. DermNet notes that milia affect 40 to 50% of newborns and are common at all ages.
In babies, milia usually clear in the first few weeks with no treatment. In adults, they can also appear on injured or swollen skin. Heavy products may play a part; Cleveland Clinic warns that coconut oil can cause milia around the eyes. Milia do not need treatment unless they bother you. If they do, a clinician can remove them with a sterile needle or blade. Our nighttime skincare routine explains how to avoid pore-clogging removers.
Keratosis Pilaris
Keratosis pilaris is a harmless condition in which keratin plugs the hair follicles. MedlinePlus describes small, rough bumps about the size of a grain of sand. They often feel like sandpaper or goose bumps, and they appear on the backs of the upper arms and the thighs.
It runs in families and is more common in people with very dry skin or eczema. It is usually worse in winter, so our winter skincare tips help. Creams containing urea, lactic acid, glycolic acid or salicylic acid can smooth the bumps, but improvement often takes months.
Molluscum Contagiosum
Molluscum contagiosum is a viral skin infection, most common in children. According to the AAD, new bumps are small, firm, and pink, flesh-colored or white. As they grow, they become dome-shaped with a dimple in the center. Scratching or picking can spread the virus to other areas of skin.
The bumps often clear on their own within 6 to 18 months, but sometimes take years. People with a weakened immune system can develop large bumps. See a doctor if bumps appear on the eyelids, because they can cause repeated pink eye.
Whiteheads and Other Bumps
Whiteheads are a form of acne: a pore blocked under a thin layer of skin. They usually come with other spots or blackheads. If small, uniform, itchy bumps appear on your chest or back, compare them with fungal acne, which needs different treatment.
Causes of Flat White Patches
Idiopathic Guttate Hypomelanosis (IGH)
IGH causes smooth, flat white spots, typically 2 to 5 mm across, on sun-exposed skin such as the shins, forearms and V of the chest. DermNet reports that it becomes very common with age, affecting 50 to 80% of people over 40. The cause is probably a mix of skin aging, long-term sun exposure and genetics.
IGH is benign. It is not a skin cancer and does not turn into one. Usually no treatment is needed beyond sun protection. Treatments such as cryotherapy, topical steroids, tacrolimus or laser exist for cosmetic reasons, but the spots do not repigment on their own.
Pityriasis Versicolor
Pityriasis versicolor (also called tinea versicolor) is caused by a fungus that normally lives on the skin and sometimes overgrows. The NHS describes patches that are pink, red or pale brown on white skin, and paler than surrounding skin on brown or black skin. They often appear on the chest, upper back, upper arms, neck or tummy, and may be scaly or itchy.
It is not eczema and it is not contagious. Treatment is antifungal, not steroid. A pharmacist or GP may suggest ketoconazole shampoo, applied to the skin and rinsed off after 10 to 15 minutes, or an antifungal cream. Skin color can take a few months to return after treatment, and the condition can come back.
Pityriasis Alba
Pityriasis alba is a separate condition, most common in children and teenagers. Patches often start slightly red and scaly, then fade to pale round or oval areas on the face, neck or upper arms. MedlinePlus notes a possible link with eczema. It usually resolves on its own over many months, and moisturizers and sunscreen help.
Vitiligo
Vitiligo causes pale white patches where pigment cells have stopped working. The NHS says the most common type, non-segmental vitiligo, is thought to be autoimmune and produces symmetrical patches on both sides of the body. Segmental vitiligo affects one area and is more common in children.
Vitiligo is linked with other autoimmune conditions, including an overactive thyroid, so a doctor may check thyroid function. It is not contagious. Steroid creams can restore some color, and camouflage creams can cover small patches. Pale patches burn easily, so use a high-SPF sunscreen.
Lichen Sclerosus
Lichen sclerosus causes itchy, white, smooth or crinkled patches, most often around the vulva, anus, foreskin or tip of the penis. The NHS says it is much more common in women over 50 but can affect anyone, including children. It is not an infection and is not caught through sex.
There is no cure, but a strong prescription steroid ointment usually controls symptoms. Untreated, the skin can scar and tighten. Lichen sclerosus also slightly raises the risk of cancer of the vulva, penis or anus. So check yourself regularly, and report any lump, thickening or ulcer that does not heal.
Why Raised White Spots Are Hard to Self-Diagnose
Many of these conditions overlap. For example, the NHS points out that vitiligo and psoriasis can look like pityriasis versicolor. Molluscum bumps can turn red as they clear and resemble pimples. Pityriasis alba starts red and scaly, then turns pale.
Skin tone changes the picture too. Pityriasis versicolor looks pinker on white skin and paler on darker skin. Pityriasis alba is more noticeable in children with darker skin. That is why photos online often mislead. A doctor can usually diagnose these conditions by looking at the skin, and the AAD notes that only a biopsy can confirm skin cancer.
Red Flags: When Raised White Spots Need a Doctor
- A spot or growth that grows, bleeds or changes (AAD).
- A sore that does not heal, or heals and comes back in the same place.
- A bump that looks rough, scaly, firm, shiny or dome-shaped and does not go away.
- An itchy white patch on the genitals or around the anus, or pain when peeing or having sex.
- Bumps on the eyelids, or many bumps in someone with a weakened immune system.
- White patches that spread quickly, or light patches in a child.
In the UK, a GP or pharmacist is the first stop for most of these. In the US, Canada and Australia, see your doctor or a board-certified dermatologist.
Common White Spot Claims: Where They Stand
| Claim | Where it stands |
|---|---|
| Vitamin D, vitamin E or calcium deficiency causes white spots | Not supported. None of the AAD, NHS, DermNet or MedlinePlus pages we reviewed list these as causes |
| Supplements will return white spots to normal color | Not supported. Get the spots diagnosed instead |
| Tinea versicolor is a type of eczema treated with steroid cream | Not accurate. It is a fungal overgrowth treated with antifungals |
| Milia are fluid-filled sacs | Not accurate. They are trapped dead skin |
| Sunspots (IGH) turn into skin cancer | Not supported. IGH is benign, though sun protection is still wise |
| Lichen sclerosus causes no symptoms until it is severe | Not accurate. Itchy white patches are the main symptom |
| Every white spot needs urgent care | Overstated. Most are harmless, but the red flags above need checking |
Safety Notes
- Do not use steroid cream on a rash you have not had diagnosed. It is the wrong treatment for fungal conditions such as pityriasis versicolor.
- Avoid picking at molluscum, because scratching spreads the virus to new skin.
- Leave milia removal to a clinician, who uses a sterile needle or blade.
- Topical retinoids, sometimes used for IGH or keratosis pilaris, should not be used in pregnancy, according to the UK Teratology Information Service.
FAQs About Raised White Spots on Skin
They are most often milia, keratosis pilaris, molluscum contagiosum or whiteheads. Milia are tiny pearly bumps of trapped dead skin. Keratosis pilaris causes rough bumps on the arms and thighs. Molluscum bumps have a central dimple.
Flat white spots on the shins are often idiopathic guttate hypomelanosis, which is linked to age and sun exposure and is harmless. Rough raised bumps on the thighs are more likely keratosis pilaris.
Dermatology sources such as the AAD, NHS and DermNet do not list vitamin D, vitamin E or calcium deficiency as causes of white spots. Taking supplements is unlikely to fix them, so get new spots diagnosed.
No. It is caused by a fungus that normally lives on the skin and sometimes overgrows. It cannot spread from person to person and is treated with antifungal shampoo or cream.
Milia often clear on their own and do not need treatment. If they bother you, a clinician can remove them with a sterile needle or blade. Avoid heavy, pore-clogging products around the eyes.
Usually not. The bumps often clear within 6 to 18 months. See a doctor if bumps are on the eyelids, become infected, or appear in someone with a weakened immune system.
Vitiligo patches are usually milky white, often symmetrical, and common on the face, hands and skin creases. Other conditions can look similar, so a doctor should confirm the diagnosis.
See a doctor if a spot grows, bleeds, changes or does not heal, if white patches appear on the genitals, if spots spread quickly, or if a child develops light patches.
Related Reading
- Skin Rashes: 8 Common Types, Causes and When to Get Help
- What Is Ecchymosis? Ecchymosis vs Bruising
- Fungal Acne: Symptoms, Causes and Treatment Options
- Winter Skincare Tips: Keep Skin Nourished
Sources
- DermNet. Idiopathic guttate hypomelanosis. dermnetnz.org
- DermNet. Milium. dermnetnz.org
- MedlinePlus. Milia. medlineplus.gov
- MedlinePlus. Keratosis pilaris. medlineplus.gov
- MedlinePlus. Pityriasis alba. medlineplus.gov
- American Academy of Dermatology. Molluscum contagiosum: signs and symptoms. aad.org
- American Academy of Dermatology. Skin cancer. aad.org
- NHS. Pityriasis versicolor. nhs.uk
- NHS. Vitiligo. nhs.uk
- NHS. Lichen sclerosus. nhs.uk
- Cleveland Clinic. Coconut oil for skin. health.clevelandclinic.org
- UK Teratology Information Service (Bumps). Topical retinoids in pregnancy. medicinesinpregnancy.org
Disclaimer: This article is for general information and cannot diagnose a skin condition. Have any new, changing or worrying spot checked by a doctor, pharmacist or dermatologist.
Last reviewed and rewritten November 2026.
