Is It Vitiligo? 8 Other Conditions
That Cause White Spots
That first white patch can be alarming — and the internet usually jumps straight to vitiligo. But white spots have many causes. Some are temporary, some harmless, and most are treatable. Here’s how to tell them apart.
Idiopathic Guttate Hypomelanosis (Sun Spots)
Tiny white dots, evenly distributed, usually less than 5mm wide, on sun-exposed areas — shins, forearms, shoulders. They do not spread or merge, and stay stable over time.
Under a Wood’s lamp, they appear dull rather than glowing white, helping distinguish them from vitiligo.
Pityriasis Alba
Often appears on children’s faces, especially in dry or cold months. Patches are lighter than surrounding skin but not completely white — unlike vitiligo. A fine dry scale may appear after washing.
With regular moisturizing and mild treatment, they usually fade on their own.
Tinea Versicolor
Caused by a harmless yeast that overgrows in warm, humid environments. Creates light or pinkish, slightly scaly patches on the back, chest, or neck.
Quick self-test: lightly scratch the patch — if it flakes, it’s most likely this fungal infection. Easily treated with antifungal creams or shampoos.
Nevus Depigmentosus
A birthmark present from infancy or early childhood with irregular, stable borders. Unlike vitiligo, it does not cause white hair in the area and does not spread to other body parts.
Nevus Anemicus
Looks lighter than surrounding skin, but this is caused by decreased blood flow — not pigment loss. Simple confirmation test: press the spot and it blends into surrounding skin, confirming it is not vitiligo.
White Scars
A circular white scar on the lower leg caused by previous skin injury or inflammation, not vitiligo.
A healed skin injury may leave a lasting white spot that closely resembles vitiligo. These are notoriously difficult to treat. Key distinction: white scars are confined to the injury site and have a history behind them.
Chemical Leukoderma
Example of chemical leukoderma affecting the hand, with clearly defined white depigmented patches on the palm and fingers.
Caused by exposure to certain chemicals found in hair dyes, cleaning agents, or rubber products. Patches mirror the area of chemical contact — usually hands or face.
Once the irritant is avoided, the skin often repigments gradually.
Halo Nevus
Example of a halo nevus, where a mole is surrounded by a distinct white ring caused by loss of skin pigment.
A mole surrounded by a ring of lighter skin. Usually harmless on its own — but can also appear alongside vitiligo, so a dermatologist confirmation is always recommended.
Still Unsure? Wood’s Lamp Examination
The most reliable way to confirm vitiligo is a Wood’s lamp examination by a dermatologist. The UV light is shined on depigmented skin — true vitiligo patches glow bright chalk-white due to complete pigment loss.
🔋 Glows bright chalk-white
Pigment completely absent — consistent with vitiligo. Further clinical evaluation recommended.
🔒 Dull or slightly lighter
Pigment partially present — likely one of the other conditions listed above.
Whether it is vitiligo or something else entirely, your skin deserves care, not panic. Take a breath, seek clarity from a qualified dermatologist, and know that support and information are always available to help you move forward with calm and confidence.
Your skin deserves clarity, not confusion.
Whether it turns out to be vitiligo or something else entirely — most white spot conditions are manageable. A dermatologist can give you answers, a diagnosis, and a path forward.
