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Table 1 Clinical features of patients with dermatomyositis

From: Performance of ENMC and EULAR/ACR classification systems applied to a single tertiary center cohort of dermatomyositis patients

Age (at diagnosis) 54.23 years ANA positivity 12 (40%)
Sex (female: male) 2.3:1 DM-specific antibodies (n = 17) 12 (70.5%)
Proximal muscle weakness 29 (96.7%) Anti-Jo1 positivity (n = 28) 0
Ro52 (n = 27) 10 (37.0%)
Raynaud 2 (6.7%) Elevated CK (n = 24) 16 (66.7%)
Dysphagia 6 (20.0%)   
Arthralgia/arthritis 11 (36.7%) Cutaneous involvement  
ILD 5 (16.7%) Heliotrope rash 27 (90.0%)
Cancer 8 (26.7%) Gottron’s papules 6 (20.0%)
   Gottron’s sign 0
Clinical diagnosis    
Definite DM 14 (46.7%) Muscle biopsy (n = 24)  
Probable DM 12 (40.0%) Endomysial inflammation 13 (54.2%)
Amyopathic DM 1 (3.3%) Perimysial/perivascular infl 7 (29.2%)
DM sine dermatitis 3 (10.0%) Perifascicular atrophy 16 (66.7%)
   Rimmed vacuoles 1 (4.1%)
Criteria probability    
High 16 (53.3%)   
Medium 13 (43.3%)   
Low 1 (3.3%)   
  1. ILD interstitial lung disease, DM dermatomyositis, ANA antinuclear antibody, CK creatine kinase