Pityriasis Alba Overview and Treatment Options
Learn about pityriasis alba, its causes, symptoms, and treatment options. Understand how this common skin condition affects children and ways to manage it effectively.
Written by Dr. J T Hema Pratima
Reviewed by Dr. Dhankecha Mayank Dineshbhai MBBS
Last updated on 3rd Sep, 2025
Pityriasis Alba (PA) is a common, harmless skin condition that mostly affects children and young adults. It appears as light-colored, dry, and scaly patches on the skin, often on the face, arms, or upper body. While it may look concerning, it is not contagious and usually resolves on its own over time.
In this article, we’ll explore what Pityriasis Alba is, its symptoms, causes, and how to manage it effectively.
What is Pityriasis Alba?
Pityriasis Alba is a mild form of eczema (a skin condition causing dryness and irritation). The name comes from:
Pityriasis – means "scaly"
Alba – means "white" (referring to the pale patches it leaves on the skin)
It is most common in children between the ages of 3 and 16 but can also affect adults. The patches may be more noticeable in people with darker skin tones because of the contrast with unaffected skin.
Consult a Top Dermatologist
Symptoms of Pityriasis Alba
The condition usually starts as slightly pink or red patches that later fade into lighter, scaly areas. Common signs include:
Dry, round, or oval patches (usually 1-4 cm in size)
Mild itching (though not always present)
Rough or flaky texture
More visible after sun exposure (since the affected areas don’t tan like normal skin)
These patches most commonly appear on:
Cheeks
Arms
Neck
Shoulders
What Causes Pityriasis Alba?
The exact cause is unknown, but several factors may contribute:
1. Dry Skin – Lack of moisture can worsen the condition.
2. Mild Eczema – Some people with PA may have a history of eczema.
3. Sun Exposure – The patches become more noticeable when the surrounding skin tans.
4. Allergies or Irritants – Soaps, detergents, or harsh skincare products may trigger flare-ups.
5. Genetic Factors – A family history of eczema or allergies may increase the risk.
How is Pityriasis Alba Diagnosed?
A dermatologist can usually diagnose PA by examining the skin. In rare cases, a skin biopsy may be done to rule out other conditions like:
Tinea Versicolor (a fungal infection)
Vitiligo (loss of skin pigment)
Psoriasis (an autoimmune skin condition)
If you or your child has persistent dry patches, consulting a dermatologist can help confirm the diagnosis.
Treatment Options for Pityriasis Alba
Since Pityriasis Alba is harmless and often resolves on its own, aggressive treatment is not usually needed. However, the following approaches can help manage symptoms and speed up recovery:
1. Moisturizing Regularly
Use fragrance-free, hypoallergenic moisturizers (like petroleum jelly or ceramide-based creams).
Apply immediately after bathing to lock in moisture.
2. Mild Steroid Creams
Over-the-counter hydrocortisone (1%) can reduce redness and itching.
Stronger steroid creams may be prescribed if needed (use under a doctor’s guidance).
3. Non-Steroidal Creams
Calcineurin inhibitors (like tacrolimus or pimecrolimus) can help reduce inflammation without steroids.
4. Sun Protection
Use sunscreen (SPF 30+) to prevent patches from becoming more noticeable.
Wear protective clothing to avoid excessive sun exposure.
5. Gentle Skin Care
Avoid harsh soaps, hot water, and excessive scrubbing.
Use mild, fragrance-free cleansers.
6. Dietary Considerations
Some studies suggest omega-3 fatty acids (found in fish, flaxseeds) may help improve skin health.
Staying hydrated is essential for maintaining skin moisture.
How Long Does Pityriasis Alba Last?
The condition usually improves within a few months but may take up to a year or more to fully disappear. Patches may come and go, especially in dry or cold weather.
When to See a Doctor?
Consult a dermatologist if:
The patches spread or worsen.
Severe itching or discomfort occurs.
The condition doesn’t improve with home care.
If you’re unsure about your symptoms, you can book a consultation with a dermatologist through Apollo 24|7 for expert advice.
Final Thoughts
Pityriasis Alba is a common and harmless skin condition that usually goes away on its own. While it may look concerning, especially in children, proper skincare and moisturizing can help manage it effectively. If you have any doubts or need medical guidance, don’t hesitate to reach out to a dermatologist.
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