-
Follows a pattern of previous skin trauma
-
May gradually repigment over time
-
Common after eczema flares or minor injuries
4. Sunspots (Not the Kind You Think)
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.
| 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:
