This is a 2 year old girl who has a patch of hypopigmentation on her left shoulder since birth. It extends from back of neck to the left shoulder. It was asymptomatic. Examination showed a hypopigmented macule 5cm by 10cm on the back of left shoulder. It is segmental in distribution and has an irregular border. There was no central hypoaesthesia. She has no ophthalmic or CNS defects.
Clinically she has
nevus depigmentosus or some form of
pigmentary mosaicism. Biopsy of the lesion was not done.
This is usually a benign skin disorder and is caused by the functional defects of melanocytes and the morphologic abnormalities of melanosomes.
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