Pityriasis Alba

Pityriasis alba is a condition that causes light areas, often with minimal scaling. These most commonly occur on the face of children or adolescents who have a history of dry skin or eczema.

Pityriasis alba may be more noticeable with sun exposure, which makes the surrounding darker areas more prominent. It tends to improve with the treatment of underlying dry skin and eczema.

Symptoms

Lighter patches on the skin with slight scaling
May be more noticeable with sun exposure and less noticeable with the use of sunscreens
May be mildly itchy

Causes and Risk Factors

Pityriasis alba is most common in children and adolescents, particularly those with a history of eczema or dry skin. It is thought to be caused by a mild eczema-like reaction that interferes with normal pigment delivery to the skin.

Diagnosis and Treatment

There are several types of prescription creams or ointments that can help pityriasis alba. The use of gentle cleansers and daily moisturizer is also recommended as this condition is thought to be a mild form of eczema. Wearing sunscreen and avoiding sun exposure is recommended, as the sun makes this condition more noticeable.

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Frequently Asked Questions

How do dermatologists diagnose pityriasis alba?: Dermatologists are typically able to make the diagnosis of pityriasis alba by examining the skin. In rare cases where the diagnosis is not clear, additional tests such as taking a small sample of skin (also known as a skin biopsy) may be needed to rule out rarer conditions that can cause light spots.

Pityriasis Alba

Frequently Asked Questions

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