An AK is a flat, scaly, rough patch, whereas an intradermal nevus is a smooth, raised, dome-shaped papule.
A nodular BCC is distinguished by its pearly, translucent appearance and surface telangiectasias, which are absent in a benign intradermal nevus.
A dermatofibroma is a firm, disc-like nodule that dimples with lateral pressure, unlike the soft, fleshy papule of an intradermalevus.
A junctional nevus is a completely flat (macular) mole, whereas an intradermal nevus is a raised (papular) mole.
A keloid is a very firm, rubbery scar that develops after trauma, a different history and consistency than a soft, congenital or acquired nevus.
An SK has a waxy, crumbly, "stuck-on" appearance, a different texture than the smooth skin surface of an intradermal nevus.
A Spitz nevus is typically a pink or reddish, rapidly-growing, dome-shaped papule, usually in a child, whereas an intradermal nevus is a stable, often flesh-colored papule in an adult.
A wart has a rough, verrucous surface, unlike the smooth surface of an intradermal nevus.