这个词是什么意思？
A chronic disorder of the pilosebaceous apparatus associated with an increase in sebum secretion. It is characterized by open comedones (blackheads), closed comedones (whiteheads), and pustular nodules. The cause is unknown, but heredity and age are predisposing factors.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000152 · MeSH 2026。
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