PRTN3 and autoimmune disease: Despite the absence of symptoms and signs of autoimmune disorders, this patient has positive anti-nuclear antibodies global (ANA positive by indirect immuno-fluorescence (IIF) 1\320 nucleolar pattern) with a negative: ANA profile, rheumatoid factor (RF) and anticyclic citrullinated peptide antibody (ACPA).<h4>Conclusion</h4>Regular and careful hand examination should be part of clinical assessment for diabetic patients as it could be a very simple and useful screening tool for diabetic cheiroarthropathy.