Red freckles are small red or pink spots on the skin caused by dilated blood vessels, often due to sun exposure or genetic factors. Unlike common brown freckles, which result from melanin production, red freckles appear due to increased blood flow in tiny capillaries near the skin's surface.
Red freckles develop when clusters of capillaries widen and fill with blood, creating visible red or pink spots. This occurs due to UV exposure, hormonal changes, or inherited traits. Sunlight triggers the release of heliosomes, enzymes that break down collagen and elastin, weakening capillary walls and causing them to dilate.
| Type | Cause | Appearance |
|---|---|---|
| Sun-induced | UV exposure | Small, flat, red or pink spots on sun-exposed areas |
| Campbell de Morgan spots | Unknown (possibly genetic) | Bright red, circular spots, often larger than freckles |
| Spider angiomas | Liver disease, pregnancy, or genetic factors | Central red spot with radiating blood vessels |
Many confuse red freckles with liver spots (lentigines), which are brown due to melanin buildup. While both appear on sun-exposed skin, their causes differ. Red freckles result from vascular changes, whereas liver spots stem from pigment production.
Most red freckles are harmless, but consult a dermatologist if they:
A dermatologist can diagnose the cause and recommend treatment if needed. For example, laser therapy targets dilated blood vessels, while topical creams may reduce inflammation.
I noticed red freckles on my arms after a summer of gardening without sunscreen. A dermatologist confirmed they were sun-induced and recommended broad-spectrum SPF 30+ daily to prevent worsening.