Which of the following are diagnostic criteria for systemic lupus erythematosus
Question : Which of the following are diagnostic criteria for systemic lupus erythematosus (SLE)? (Select all that apply)
A. Butterfly rash
B. Oral ulcers
C. Normal complement levels
D. Positive antinuclear antibody (ANA)
Answer: ABD
Explanation: According to the ACR/EULAR SLE diagnostic criteria, typical manifestations include butterfly rash, oral ulcers, arthritis, renal involvement, neurological involvement, and positive autoantibodies (ANA, anti-dsDNA, anti-Sm). SLE patients often have decreased complement levels (C3, C4) due to immune complex consumption. Normal complement levels are not a diagnostic criterion. Therefore, the correct answers are ABD.
