VTN and systemic lupus erythematosus: Clinical involvements consider constitutional, hematological, neuropsychiatric, mucocutaneous, serosal, musculoskeletal, and renal system and immunological criteria include the presence of ANA, antiphospholipid antibodies, complement proteins and SLE‐specific antibodies like anti‐ds DNA, anti‐Smith, and anti‐histone DNA.6