This is one reason people sometimes notice white spots after spending time outdoors during the summer.
Sun protection is still important.
Use broad-spectrum sunscreen, wear protective clothing when appropriate, and avoid excessive ultraviolet exposure. This can help protect the surrounding skin and reduce additional sun damage.
3. Vitiligo
Another possible cause of white patches is vitiligo.
Vitiligo occurs when pigment-producing cells called melanocytes are destroyed or stop functioning normally. This can lead to areas of skin becoming significantly lighter or completely depigmented.
Unlike tiny IGH spots, vitiligo often produces larger, more clearly defined patches.
It can affect almost any area of the body, including:
Hands and fingers
Face
Around the eyes and mouth
Elbows and knees
Genital areas
Feet
Armpits
Hair growing within an affected area may also lose pigment.
Vitiligo is not contagious, and it is not caused by poor hygiene.
Because vitiligo can sometimes progress over time, unexplained patches that are becoming larger or appearing in new locations should be assessed by a dermatologist.
