Dermoscopy of nails

From dermoscopedia academy

Editing Lentigo of the nail (melanotic macule of the nail)[edit]

Below are dermoscopic features commonly associated with the diagnosis “Lentigo of the nail (melanotic macule of the nail)”.[1] The example images have been approved by a panel of experts as representative of each given feature.

For a more in-depth discussion of associated features, please see the Dermoscopedia page for “Nail unit lentigo”.

Multiple thin homogenous gray lines (or single gray band) +/- gray background[edit]

Subungual hemorrhage[edit]

Below are dermoscopic features commonly associated with the diagnosis “Subungual hemorrhage”.[2] The example images have been approved by a panel of experts as representative of each given feature.

For a more in-depth discussion of associated features, please see the Dermoscopedia page for “Subungual hemorrhage”.

Well circumscribed red-black dots or blotches [edit]

Distal streaks of red-brown coloration (“filamentous” distal end)[edit]

Homogenous red/purple/black coloration without melanin [edit]

  1. Fried LJ, Tan A, Berry EG, et al. Dermoscopy Proficiency Expectations for US Dermatology Resident Physicians: Results of a Modified Delphi Survey of Pigmented Lesion Experts. JAMA Dermatol. Published online January 06, 2021. doi:10.1001/jamadermatol.2020.5213
  2. Fried LJ, Tan A, Berry EG, et al. Dermoscopy Proficiency Expectations for US Dermatology Resident Physicians: Results of a Modified Delphi Survey of Pigmented Lesion Experts. JAMA Dermatol. Published online January 06, 2021. doi:10.1001/jamadermatol.2020.5213