(BMJ)—A 13-yo boy presented w/ fever, truncal rash, and arthralgias in the pelvis and knees. Exam: severe papulopustular acne on chest and back. Labs: elevated CRP, WBC 16.8x109/L. Abdominal U/S negative. Fecal calprotectin negative. MRI positive for sacroiliitis. What is the dx?
Sweet syndrome
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Psoriatic arthritis
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SAPHO syndrome
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Majeed syndrome
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Deficiency of IL-1 receptor antagonist (DIRA)
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