### What is Pityriasis Alba? Pityriasis alba is a skin condition that initially causes red, scaly patches. Over time, these patches improve but leave behind lighter areas on the skin. It commonly affects children and usually appears on the face, neck, arms, shoulders, or belly. The patches can be round, oval, or have wavy borders and vary in size from smaller than a coffee bean to larger than a golf ball. ### Symptoms The most noticeable symptom is the appearance of lighter patches on the skin. These patches can last from a few months to a few years. They usually do not cause any discomfort, but in some cases, they may be itchy, red, or scaly. ### Causes The exact cause of pityriasis alba is unknown. It may be related to atopic dermatitis or eczema, which are conditions that cause skin rashes. People with sensitive skin or those who get a lot of sun exposure may be more prone to developing this condition. ### Who Gets It? Pityriasis alba is most common in school-age children and affects boys and girls equally. It usually resolves as they grow older. People with all skin types can get it, but it is more noticeable in those with darker skin. ### Diagnosis Doctors can often diagnose pityriasis alba by examining the skin. In rare cases, a biopsy may be performed to rule out other conditions. A small sample of skin is taken and examined under a microscope by a pathologist. ### Treatment Pityriasis alba often improves on its own. Moisturizers or creams can help with dryness. If the skin is inflamed, itchy, or red, a doctor may prescribe corticosteroid or nonsteroidal creams. Targeted phototherapy may also help, but more research is needed. ### Conclusion While pityriasis alba can be concerning due to its appearance, it is generally harmless and often resolves without treatment. If you have concerns, consult a healthcare provider for advice and potential treatment options.