A 40-year-old man presented with a 2-week history of scaly foot rash, joint swelling, penile rash, knee swelling, tongue changes, red eyes, and low back pain. He had had diarrhea and urethral discharge 7 days before the onset of symptoms. On examination, yellow pustules with hyperkeratosis were seen on his plantar feet.
What is the name of this physical examination sign?
A. Keratoderma blenorrhagicum
B. Palmoplantar keratoderma
C. Pitted keratolysis
D. Porokeratosis
E. Pustular psoriasis
答案解析：
正确的答案是出血性角化病。C反应蛋白升高，尿液分析显示无菌性脓尿，感染因子和类风湿因子检测结果为阴性。左膝滑液分析符合非感染性炎性关节炎。诊断为反应性关节炎。患者接受非甾体抗炎药、全身性糖皮质激素和柳氮磺吡啶治疗。
正确答案：A
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