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Segmental pigmentation disorder

Segmental hyperpigmentation on the lower abdomen with a sharp cut-off at the midline

Keywords: Child, Female, Genitalia, Lower abdomen midline demarcation, Sharp borders, Unilateral segmental hyperpigmented patch, Sensitive-image

What is segmental pigmentation disorder?

Segmental pigmentation disorder (SegPD) refers to a subset of localised cutaneous pigmentary anomalies without systemic manifestations. It is characterised by unilateral hypo- or hyperpigmented patches, predominantly on the frontal torso with a sharp midline delineation.

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Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9631269/