Question: Can you identify this condition?

[摘要] A 75-year-old healthy man presents with multiple grouped open comedones and yellow waxy papules on his cheeks. They are asymptomatic. The condition had slowly progressed over the past 10 years.1.Cutis rhomboidalis nuchae 2.Sebaceous hyperplasia 3.Comedonal acne

[学科分类] 卫生学

[关键词] friction factors;wind measurements;tsunami