Pityriasis alba is a common skin disorder that causes patches of light-colored (hypopigmented) areas.
The cause is unknown but may be linked to atopic dermatitis (eczema). The disorder is most common in children and teens. It is more noticeable in children with dark skin.
The problem areas on the skin (lesions) often start as slightly red and scaly patches that are round or oval. They usually appear on the face, upper arms, neck, and upper middle of the body. After these lesions go away, the patches turn light-colored (hypopigmented).
The patches do not tan easily. Because of this, they may get red quickly in the sun. As the skin surrounding the patches darkens normally, the patches may become more visible.
Your provider may recommend the following treatments:
Yvonne Knight is a Dermatologist in Ridge, Virginia. Dr. Knight has been practicing medicine for over 27 years and is rated as an Advanced doctor by MediFind in the treatment of Pityriasis Alba. She is also highly rated in 2 other conditions, according to our data. Her top areas of expertise are Molluscum Contagiosum, Pityriasis Alba, Hepatic Hemangioma, and Keloids. Dr. Knight is currently accepting new patients.
Amor Khachemoune is a Dermatologist in Mc Lean, Virginia. Dr. Khachemoune has been practicing medicine for over 34 years and is rated as an Advanced doctor by MediFind in the treatment of Pityriasis Alba. He is also highly rated in 17 other conditions, according to our data. His top areas of expertise are Steatocystoma Multiplex, Basal Cell Skin Cancer, Pyogenic Granuloma, Sebaceous Adenoma, and Lymphadenectomy. Dr. Khachemoune is currently accepting new patients.
Pityriasis alba usually goes away on its own with patches returning to normal pigment over many months.
Patches may get sunburned when exposed to sunlight. Applying sunscreen and using other sun protection can help prevent sunburn.
Contact your provider if your child has patches of hypopigmented skin.
Summary: Pityriasis alba (PA) is a common, benign skin disorder occurring predominantly in children and adolescents. It is characterized by ill-defined hypopigmented macules and patches, round or oval in shape. They are most commonly located on the face (especially the cheeks), arms, and upper trunk; and they are more noticeable in people with darker skin types. Sun exposure accentuates the lesions. Patien...
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Published Date: May 31, 2023
Published By: Ramin Fathi, MD, FAAD, Director, Phoenix Surgical Dermatology Group, Phoenix, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
Dinulos JGH. Light-related diseases and disorders of pigmentation. In: Dinulos JGH, ed. Habif's Clinical Dermatology. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 19.
Patterson JW. Disorders of pigmentation. In: Patterson JW, ed. Weedon's Skin Pathology. 5th ed. Philadelphia, PA: Elsevier; 2021:chap 11.