Table 1.

Dermoscopic Features of Seborrheic Keratosis

Disease	Characteristic Dermoscopic Structures	References
Seborrheic keratosis (SK)	Moth-eaten borders Hairpin vessels Brain-like structures Fingerprinting-like structures Comedo-like openings Milia-like cysts	[7,12–14]
Irritated SK	Lack of the typical SK-related features Symmetric distribution of structures (vessels surrounded by halos) Vessels of various morphologies (hairpin, glomerular, tortuous)	[11,14,15]
Melanoacanthoma	Heavily pigmented “Starburst” pattern Ridges and fissures Comedo-like openings Milia-like cysts Blue-white veil	[14,16]
Clonal SK	Sharp demarcation Milia-like cysts Irregularly distributed brown and blue-grey globules	[7,11,14,17,18]
LPLK/solar lentigo	Light-brown pseudonetwork	[14,19]
LPLK/ regression	Annular granular structures Grey pseudonetwork Blue-grey fine dots Irregular streaks Rhomboid structures	[14,19]

Abbreviations: SK, Seborrheic Keratosis; LPLK, Lichen Planus Like Keratosis.