Division of Dermatology, Loyola University Medical Center, Maywood, IL, USA.
Department of Public Health Sciences, Loyola University Chicago, Maywood, IL, USA.
Arch Dermatol Res. 2020 Dec;312(10):739-746. doi: 10.1007/s00403-020-02131-9. Epub 2020 Sep 15.
Data on how patients with a history of skin cancer apply sunscreen are lacking.
To characterize (1) gender differences in sunscreen application technique (quantity used, anatomic site coverage, and time allocated) and (2) differences in sunscreen application to unaffected skin versus previous skin cancer sites.
Subjects with a history of skin cancer were asked to apply sunscreen to their head as they normally would. The amount of sunscreen used and application time were recorded. Before and after photos were taken. Using Wood's lamp lighting, an anatomic site coverage score was rated on an ordinal scale (1 = 0-25%, 2 = 26-50%, 3 = 51-75%, 4 = 76-100% coverage).
Males used 530 mg more sunscreen (p < 0.001) and applied approximately 5 mg/cm of sunscreen versus women, who applied 2 mg/cm. The average coverage score was 3.27. Males were 7.61 times more likely to adequately apply sunscreen to the ears (p = 0.001). No differences were noted in application times. Coverage scores were similar for unaffected skin and previous skin cancer sites.
Observations in a controlled setting may not reflect usual sunscreen application practices.
Overall, skin cancer survivors of both genders effectively applied sunscreen in line with recommended quantity guidelines, but men were significantly better at protecting their ears.
缺乏关于有皮肤癌病史的患者如何使用防晒霜的数据。
描述（1）在使用防晒霜的技术（使用量、覆盖的解剖部位和分配的时间）方面的性别差异，以及（2）在未受影响的皮肤和以前的皮肤癌部位使用防晒霜方面的差异。
要求有皮肤癌病史的受试者像平时一样在头部涂抹防晒霜。记录使用的防晒霜量和涂抹时间。在涂抹前和涂抹后拍照。使用伍德灯照明，根据等级量表（1=0-25%、2=26-50%、3=51-75%、4=76-100%覆盖）对解剖部位覆盖评分进行评估。
男性使用的防晒霜多 530 毫克（p<0.001），涂抹的防晒霜量约为 5 毫克/平方厘米，而女性涂抹的防晒霜量为 2 毫克/平方厘米。平均覆盖评分 3.27。男性将防晒霜充分涂抹于耳部的可能性是女性的 7.61 倍（p=0.001）。涂抹时间无差异。未受影响的皮肤和以前的皮肤癌部位的覆盖评分相似。
在受控环境中进行的观察结果可能无法反映通常的防晒霜使用实践。
总体而言，两性的皮肤癌幸存者都按照推荐的数量指南有效地涂抹了防晒霜，但男性在保护耳朵方面明显更好。
