MX1 and Psoriasiform dermatitis: Our study included finger skin specimens from 30, 19, and 25 cases positive for anti-ARS, anti-MDA5, and anti-TIF1γ antibodies classified according to cutaneous histopathological classifications—(i) interface dermatitis, (ii) psoriasiform dermatitis, (iii) eczematous reaction, and (iv) vascular injury—and also analyzed by immunohistochemistry to detect myxovirus resistance A (MxA) expression, which is usually associated with type I IFN activity.