What is the technical term for fine, red lines resembling tiny tree branches seen under the skin surface due to sun damage?
Answer
Telangiectasias
A common vascular consequence of cumulative sun exposure involves the integrity of small blood vessels near the skin's surface. When UV radiation damages the vessel walls, they lose their structural support and become permanently dilated or broken, appearing as fine red lines. These visible broken capillaries are specifically identified as telangiectasias. This condition often appears in areas like the nose, cheeks, and chest, which receive significant, frequent UV exposure over many years.
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