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3. Fungal Skin Infections
A superficial fungal infection known as pityriasis versicolor, or tinea versicolor, can cause lighter patches on the skin. The patches may be white, pale brown, pink, or slightly darker than the surrounding skin.
They commonly occur on the chest, back, shoulders, and upper arms, but other areas can sometimes be affected. Fine scaling or mild itching may occur.
Unlike some other causes of white spots, fungal infections can often be treated with antifungal medication. However, it is important to make sure the diagnosis is correct before treating the condition, because several skin disorders can look similar.
4. Pityriasis Alba
Pityriasis alba is a common, harmless skin condition that produces pale patches, often with mild dryness or scaling. It is particularly common in children and teenagers, although adults can also develop it.
The patches are often easier to see after sun exposure because the surrounding skin becomes darker while the affected areas remain lighter. They may occur on the face, arms, and other exposed areas.
Regular moisturizing and sun protection can help reduce their appearance. In many cases, the patches gradually return to their normal color.