Ironically, sun damage can cause both dark spots and white spots. Some people develop white spots where sun exposure has destroyed pigment cells over time—essentially, tiny areas of sun damage.
How to Tell Them Apart
| Feature | IGH | Tinea Versicolor | Vitiligo |
|---|---|---|---|
| Size | Small (1-5mm) | Variable | Variable, often larger |
| Shape | Round/teardrop | Irregular patches | Irregular patches |
| Location | Sun-exposed areas (arms, legs) | Chest, back, shoulders | Anywhere, often symmetrical |
| Texture | Smooth | May be slightly scaly | Smooth |
| Age of onset | Usually after 40 | Any age | Often starts young |
| Seasonal | Year-round | More noticeable in summer | Year-round |
Can You Prevent or Treat IGH?
Since IGH is linked to sun exposure and aging, the best prevention is sun protection:
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Use broad-spectrum sunscreen daily on exposed skin
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Wear protective clothing when outdoors for long periods
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Avoid tanning beds entirely
As for treatment: There's no guaranteed way to make existing IGH spots disappear, but some people have success with:
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Topical retinoids – May help stimulate pigment production
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Cryotherapy – Freezing can sometimes trigger repigmentation (results vary)
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Microneedling – Some evidence suggests it may help
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Topical steroids – Prescribed by a dermatologist in some cases
Important: These treatments should only be pursued under a dermatologist's guidance. What works for one person may not work for another.
When to See a Doctor
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