A 27-year-old woman consulted for this pigmented lesion on the sole of her left foot present for 2 months. Dermoscopy revealed a
parallel ridge pattern and the presence of aggregated black globules, well seen at the border of the lesion (red circle): this unique dermoscopic feature named "
pebbles on the ridges" is typical of a
subcorneal haemorrhage (or subcorcorneal hematoma, black heel).