Alopecia, also known as hair loss, is a highly prevalent condition affecting millions of men and women in the United States and worldwide, making it one of the most common complaints by patients presenting to a dermatologist. The symptomology on the presentation of alopecia can be highly variable, ranging from diffuse thinning of hair, discrete and localized patches completely absent of hair, or noticing significant shedding when brushing and showering. Although alopecia does not have a direct negative health impact on patients, it is nonetheless a debilitating disease as it can profoundly impact an individual’s self-image and psychosocial well-being. There are multiple treatment options available to patients with alopecia, and they are typically tailored to the patient’s needs and preferences. The most common of these is the Food and Drug Administration-approved drugs for alopecia, minoxidil, and finasteride. However, both of these are known to be partially efficacious for all patients, so clinicians often use different modalities in conjunction with them, in particular laser-based therapies. This review article will provide a comprehensive assessment of lasers and other light therapies that may be used to manage the two most common types of alopecia: androgenetic alopecia and alopecia areata.

脱发，也称为脱发，是一种非常普遍的疾病，影响着美国和全世界数百万男性和女性，使其成为皮肤科医生最常见的主诉之一。脱发的症状变化很大，包括头发弥漫性稀疏、离散的局部斑块完全没有头发，或者在刷牙和淋浴时注意到明显的脱落。尽管脱发不会对患者的健康产生直接的负面影响，但它仍然是一种使人衰弱的疾病，因为它会深刻影响个人的自我形象和社会心理健康。脱发患者有多种治疗选择，通常根据患者的需求和偏好量身定制。其中最常见的是美国食品和药物管理局批准的治疗脱发的药物、米诺地尔和非那雄胺。然而，众所周知，这两种疗法对所有患者都部分有效，因此临床医生经常结合使用不同的疗法，特别是基于激光的疗法。这篇综述文章将对激光和其他光疗法进行全面评估，这些疗法可用于治疗两种最常见的脱发类型：雄激素性脱发和斑秃。