囊肿性痤疮是一种重度（Ⅳ级）痤疮（俗称"青春痘"），表现为大小不等的结节、囊肿，常继发化脓感染，破溃后常流出带血的胶冻状脓液，以后形成窦道及瘢痕。
目的观察他扎罗汀凝胶治疗囊肿性痤疮的疗效。
Objective To observe the efficiency of tazarotene gel to treat patients with cystic acne.
痤疮是一种青春期常见的毛囊皮脂腺的慢性炎症性疾病，其特点为粉刺、丘疹、脓疱、炎性结节、浅表脓性囊肿及深部炎症。
Acne is a common pubertal diseases of pilosebaceous chronic inflammation, characterized by acne, papule, agria, inflammatory nodus, superficial purulent cyst and deep inflammation.
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