疣（warts ）俗称瘊子，由人乳头瘤病毒（human papillomavirus、HPV）引起。已知的人乳头瘤病毒有100多种，因此疣也有很多种，如普通疣、扁平而光滑的扁平疣、呈螺丝或者指头状的丝状疣、长在生殖器上的阴部疣、常见于手和脚底的密集跖形疣、常见于指甲周围的菜花状疣、常见于足部的块状跖形疣等。
HPV 有传染性，因此不要接触患者用过的毛巾等个人物品。常见的非处方去疣药物通常有效成分是水杨酸（salicylic acid ），大量涂抹在患处、晾干，反复使用直至疣消失即可，美国药剂师推荐的此类药物为 Compound W[来源]。
11% off
Compound W Wart Remover Fast Acting Gel, Maximum Strength Salicylic Acid, 0.25 oz, 2 Pack
- Compound W Maximum Strength Fast Acting Gel penetrates to remove common and plantar warts
- Fast Acting Gel with WartSeal starts working instantly and is the maximum strength wart remover...
- Features a no-drip liquid salicylic acid formula with an easy, on-the-go tube application
其他常见品牌还有 DuoFilm、Dr. Scholl’s Clear Away 和 Curad Mediplast 等。除了水杨酸外，去疣还有一种常见的「冷冻疗法」，即用液态氮迅速冷冻疣子，使它在几天内坏死、自然脱落。
Dr. Scholl’s FreezeAway Wart Remover, 12 Applications / Doctor-Proven Treatment to Rapidy Freeze and Remove Common and Plantar Warts
- Removes warts with as few as 1 treatment
- Uses a doctor-proven method of removing warts
- Safe to use on kids ages 4 and older
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