Question: Can you identify this condition?

An 8-year-old boy presented with a 1-year history of asymptomatic, slowly progressive patches arranged in a linear distribution on his right lower extremity. The patches were hyperpigmented, and both discrete and confluent. Telangiectasias overlying some of these patches were also noted. The patient denied any trauma to the site or any other precipitating factor. The patient was otherwise healthy and taking no medications. He had no family history of a similar condition.

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