Atypical mole syndrome consists of multiple clinically atypical nevi, together with an increased risk of melanoma. It occurs as a familial syndrome.

The fried egg pattern for an atypical nevus. The center is dark and raised with a lighter, less distinct scalloped border.

The pigmentation of atypical nevi has several distinct patterns. Here, there is a broad homogeneous white center with a hyperpigmented rim.