Dermoscopy and teledermoscopy
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Dermoscopic features of pigmented lesions

By dermoscopy, the pigmentation of the lesion is evaluated in terms of colour(s) and structure.
Colours found in pigmented skin lesions include black, brown, red, blue, grey, yellow and white. Characteristics of the structure of the skin lesions include:

Symmetry or asymmetry
Homogeny/uniformity (sameness) or heterogeny (structural differences across the lesion)
Distribution of pigment: network, pseudonetwork, blotches, dots, globules, cobblestoning, ovoid masses

Skin surface keratin: milia, crypts, fissures
Vascular pattern: regular or irregular
Border of the lesion: fading or sharply cut off
Presence of ulceration

There are specific dermoscopic patterns that aid in the diagnosis of the following pigmented skin lesions:

Early melanoma	Benign lentigo	Benign melanocytic naevus