In physical skin screening, what does the acronym ABCDE stand for?

• A. Asymmetry, Border, Color, Diameter, Evolving
• B. Aesthetic, Border, Color, Diameter, Evolution
• C. Asymmetry, Boundary, Color, Depth, Evolution
• D. Abnormality, Border, Color, Diameter, Evolution

Answer: (A)

The main concept here is the ABCDE rule used in skin screening to spot features that raise concern for melanoma. It emphasizes five characteristics: Asymmetry, Border irregularity, Color variation, Diameter, and Evolution over time. Asymmetry means the two halves of a lesion don’t mirror each other. Border refers to edges that are irregular, ragged, or blurred rather than smooth. Color variation means multiple colors or uneven coloring within the lesion. Diameter gives a rough size cue, commonly noted as greater than about 6 millimeters, though any lesion that is changing should raise concern regardless of size. Evolution captures any change in size, shape, color, or symptoms over time. The correct wording uses Asymmetry, Border, Color, Diameter, Evolution, which matches the standard terms. Other options replace standard terms with nonstandard ones or use different wording (such as Aesthetic or Depth), or swap evolution for evolving, which aren’t the conventional terms in this screening rule.