Final answer:
Junctional nevi are typically flat, brown, and have irregular borders. They are identified based on the ABCDE mnemonic which stands for Asymmetry, Borders, Color, Diameter, and Evolving.
Step-by-step explanation:
Junctional nevi are a type of mole that typically present certain characteristics. They are flat, brown, and have irregular borders. Doctors often make use of the ABCDE mnemonic to aid in the diagnosis of early-stage melanoma which can also apply to junctional nevi. It stands for Asymmetry (the two sides of the nevus are not symmetrical), Borders (the edges of the mole are irregular in shape), Color (varied shades of brown or black), Diameter (normally larger than 6 mm), and Evolving (indicating that the shape of the mole has changed over time).
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