POST-INFLAMMATORY HYPOPIGMENTATION

By Gary M. White, MD

Post-inflammatory hypopigmentation Post-inflammatory hypopigmentation in a child with atopic dermatitis.


Post-inflammatory hypopigmentation is the development of ill-defined whitish spots in areas of previous inflammation. The distribution of melanin from melanocytes to keratinocytes is disrupted by inflammation of the skin and whitish spots are the result. Pityriasis alba is a specific variant occurring on the cheeks in prepubertal children.

Clinical

Ill-defined, hypo, but not depigmented areas develop in the same areas as a previous rash. Atopic dermatitis, seborrheic dermatitis and eczema are common triggers.

Treatment

The skin will return to normal pigmentation as long as the causative rash does not return.

Additional Pictures

PIHO after psoriasis and atopic dermatitis.
Post-inflammatory hypopigmentation Post-inflammatory hypopigmentation

These white spots were left after several tags were frozen in a darker-skinned patient.
Post-inflammatory hypopigmentation

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