pityriasis alba
Pronunciation: pit-ih-RY-uh-sis AL-buh
A common benign condition in children presenting as hypopigmented, slightly scaly patches, typically on the face.
Full Definition
Pityriasis alba is a benign inflammatory disorder predominantly affecting children and adolescents, characterized by ill-defined, hypopigmented patches with fine scaling. The condition most commonly affects the face, particularly the cheeks, but can occur on the neck, shoulders, and arms. It is considered a manifestation of atopic dermatitis and is more noticeable in children with darker skin types. The hypopigmentation is temporary but may persist for months to years. Medical writers should emphasize the benign nature and eventual resolution to address parental concerns about permanent pigmentary changes.
Usage
Usage note: Two separate words, not hyphenated. 'Alba' means white in Latin, explaining the appearance.
In Context
- "The child's facial hypopigmented patches were consistent with pityriasis alba rather than vitiligo." — differential diagnosis
- "Pityriasis alba commonly affects children with a history of atopic dermatitis." — medical education material