5. Post-Inflammatory Hypopigmentation
Sometimes a white or lighter area develops after the skin has been irritated or injured.
This is called post-inflammatory hypopigmentation.
It can occur after:
Eczema
A rash
Scratches
Burns
Insect bites
Skin infections
Other forms of inflammation
The original skin problem may disappear, leaving behind an area that temporarily has less pigment.
In many cases, the color gradually returns as the skin recovers, although the process can take weeks or months depending on the underlying cause.
6. Dry Skin Can Make Skin Look Patchy
Very dry skin can sometimes create a pale or uneven appearance, particularly when there is fine scaling.
This is different from true loss of pigment.
If the area becomes less noticeable after moisturizing, dryness may be contributing to the appearance.
However, persistent sharply defined white spots should not automatically be attributed to dry skin.
7. Nutritional Deficiencies Are Not Usually the Main Explanation
Social media often claims that white spots on the skin automatically indicate a vitamin or mineral deficiency.