A 25-year-old woman has a malar rash, photosensitivity, joint pain and proteinuria. What is the most likely diagnosis?
Answer and explanation
Correct answer: B. Systemic lupus erythematosus
- Step 1: The picture of a malar rash with photosensitivity fits Systemic lupus erythematosus.
Answer
Systemic lupus erythematosus.
Why not the others: 'Rheumatoid arthritis': it gives erosive symmetrical joint disease without a malar rash. 'Rosacea': it causes facial flushing and pustules without joint or renal disease. 'Dermatomyositis': it gives a heliotrope rash with proximal muscle weakness.
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