Blue Nevus

Blue Mole

Overview

A blue nevus is a benign melanocytic nevus that appears blue or blue-gray due to the deep dermal location of melanin-producing cells. The Tyndall effect causes the blue color, as shorter wavelengths of light are reflected back through the skin. While the vast majority are benign, rare malignant variants exist, so monitoring is important.

Key Symptoms

• Well-circumscribed, dome-shaped blue or blue-gray papule
• Usually small, less than 10 mm in diameter
• Firm to palpation
• Uniform color throughout the lesion
• Typically solitary and stable over time
• Most commonly appears in childhood or adolescence

Affected Areas

Dorsal hands and feet, Face, Scalp, Buttocks, Arms

Care Instructions

1. No treatment is required for stable, typical blue nevi.
2. Monitor for any changes in size, shape, or color.
3. See a dermatologist for evaluation to distinguish from melanoma.
4. A biopsy may be recommended if the lesion is atypical or changing.
5. Photograph the lesion periodically to track stability.
6. Surgical excision can be performed if there is diagnostic uncertainty.

Medical Disclaimer: This information is for educational purposes only and does not replace professional medical advice. Always consult a qualified dermatologist for diagnosis and treatment.

Prevalence: Relatively common; found in approximately 1–2% of the general population