An unusual association between anti-histone antibody seropositive SLE, autoimmune hemolytic anemia, and herpetic rash: A case report.

Systemic lupus erythematosus (SLE) is an autoimmune disease associated with several autoantibodies targeted to nuclear and cytoplasmic antigens. Positivity of the serum antinuclear antibody (ANA), double stranded (ds) DNA, anti-smith (sm) antibody are essential for the diagnosis of SLE. Anti-histone antibody is usually present in drug-induced SLE. Autoimmune hemolytic anemia (AIHA) in SLE is usually mediated by warm IgG anti-erythrocyte antibodies. Our case evaluation revealed negative anti-ds antibody and anti-smith antibody, low C3 and C4 complement level, strong anti-histone antibody-positive status, and AIHA. She responded with intravenous methyl prednisolone and showed significant clinical improvement. Anti-histone antibody-positive SLE presenting with AIHA is rare, probably we are reporting the first case.