Rapidly Changing Dark Moles: Melanoma Warning Signs and Urgent Evaluation

Multiple dark pigmented moles exhibiting rapid growth warrant prompt dermatologic evaluation for possible melanoma, the deadliest skin cancer. Early detection dramatically improves survival.

ABCDE Criteria for Melanoma Detection

Letter	Feature	Concerning Findings
A	Asymmetry	One half unlike the other
B	Border	Irregular, scalloped, poorly defined
C	Color	Varied shades (tan, brown, black, red, white, blue)
D	Diameter	>6 mm (pencil eraser), but melanomas can be smaller
E	Evolving	Change in size, shape, color, elevation; new symptoms (itch, bleed, crust)

Additional Red Flags

• "Ugly duckling" sign: One mole distinctly different from others.
• Rapid growth: >50% size increase in <12 months.
• New mole after age 30–35.
• Amelanotic melanoma: Pink/red nodule lacking pigment—often missed.

Risk Factors

• Fair skin, light eyes/hair, freckling, sunburn history.
• >50 common nevi or ≥5 atypical nevi.
• Personal/family history of melanoma.
• Immunosuppression.
• Tanning bed use (especially <35 years).

Action Plan

1. Self-exam monthly: Full body, including scalp, soles, nails, genital area.
2. Annual professional skin exam (more frequent if high-risk).
3. Dermoscopy: Non-invasive polarized light microscopy improves diagnostic accuracy.
4. Biopsy: Excisional (preferred) or deep shave/saucerization for histopathology.

Do not delay. Melanoma thickness (Breslow depth) at diagnosis is the strongest prognostic factor. 5-year survival: Stage I >99%, Stage IV ~30%.