Nailfold capillary (NC) abnormalities are increasingly utilized in the evaluation of rheumatic conditions. Their presence can distinguish primary Raynaud’s phenomenon from secondary etiologies and are used in the diagnostic criteria of scleroderma. Dermoscopy is a convenient method of evaluating NC changes with similar efficacy to capillaroscopy. We imaged all ten nailfolds of subjects with dermatomyositis (DM) using a dermatoscope with a smartphone adapter. Fingernails were cleaned with an alcohol swab prior to evaluation. Images were assessed for loop dilation (LD), abnormal morphology (AM), capillary bed disorganization (CBD), capillary hemorrhage (CH), capillary dropout (CD), decreased capillary density (DCD), and subpapillary plexus visibility (SP). Cutaneous Dermatomyositis Area and Severity activity (CDASI-A) scores and systemic activity (lung, muscle, or joint involvement) were collected. Analysis used Student’s t-test and chi-square test. Subjects with hypertension, hyperlipidemia, diabetes, glaucoma, or other primary rheumatic disease were excluded. 44 subjects, 17 with amyopathic DM (ADM), were included. Mean (standard error) CDASI activity and damage scores were 13 (1.05) and 4 (0.39), respectively. 89% of subjects demonstrated capillary abnormalities. LD (77%), followed by CBD (73%), were the two most common findings. NC changes were most often found on 4th and 5th fingers. Thumbs demonstrated the fewest abnormalities. Mean CDASI-A was higher in patients with AM (CDASI 16 vs 10, p=0.003), CD (15 vs 10, p=0.016), DCD (17 vs 10, p<0.001), and trended towards significance for LD and CBD. There was a trend towards a higher percentage of CH in patients with ADM compared to those with muscle disease (no difference in CDASI-A). Subjects with skin limited disease (n=23) vs active systemic disease demonstrated more AM (74% vs 38%, p=0.02; no difference in CDASI-A). Given its prevalence, NC changes are useful in the evaluation of DM. AM, CD, and DCD may be markers of cutaneous disease activity.