Alopecia: A review of laser and light therapies

Rangwala, Sophia; Rashid, Rashid M

doi:10.5070/d31jt041t2

Cited by 44 publications

(2 citation statements)

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“…Low-level laser therapy may promote antioxidant and anti-inflammatory cytokines, as well as have a perifollicular vasodilator impact, which in turn accelerates keratinocyte and fibroblast mitosis. Evidence based studies on the effectiveness of laser therapy for AGA is currently still poor [49,52].…”

Section: Laser Therapy (Photobiomodulation)mentioning

confidence: 99%

Androgenetic Alopecia: An Overview

Abdelkader,

Y. Abdallah,

Abdeen

et al. 2024

Benha Journal of Applied Sciences

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Androgenetic alopecia (AGA) is the most prevalent type of hair loss in both men and women. As the name indicates, the role of androgens and genetic vulnerability predisposes to pattern hair loss. AGA is characterized by gradual hair follicular miniaturization, brought on by the actions of androgens on genetically sensitive hair follicles' epithelial cells in androgen-dependent regions. AGA in women is called female pattern hair loss (FPHL), which is characterized by a decrease in hair density in the central part of the scalp while the frontal hairline is typically well preserved. While histologically identical, male, and female pattern hair loss are separate clinical entities. There are many known and unknown factors that influence the development of AGA, its exact pathogenesis is unclear precisely. This article discusses the current understanding of the etiopathogenesis of AGA, clinical features diagnostic tests available, and its treatment options such as various topical agents, systemic agents, and procedural interventions.

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Section: Laser Therapy (Photobiomodulation)mentioning

confidence: 99%

Androgenetic Alopecia: An Overview

Abdelkader,

Y. Abdallah,

Abdeen

et al. 2024

Benha Journal of Applied Sciences

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“…Diphenylcyclopropenone was applied to the scalp while topical 0.5-1% anthralin was applied daily on the beard for 10 min to 1 h, provided there was no dermatitis, for up to 30 weeks [44,45]. Laser therapies such as 308 nm excimer laser for BAA yielded inconsistent results across studies: one study reported success in some beard cases [46] and another reported improved results only for patients with alopecia areata of the scalp [47].…”

Section: Treatmentmentioning

confidence: 99%

Alopecia Areata Barbae in a Nutshell

Nwosu

Miteva²

2023

Skin Appendage Disord

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Beard alopecia areata, or alopecia areata barbae, (BAA) is a subset of alopecia areata, a T-cell mediated inflammatory disease that disrupts the hair follicle cycle leading to early onset of catagen. The aim of this review is to help strengthen clinicians' skills in the evaluation, diagnosis, and management of BAA. We performed a literature review according to the modified PRISMA guidelines, using a combination of relevant key words in electronic databases. According to the data from the 25 articles on BAA reviewed here, BAA mostly affects middle-aged men (mean age 31 years) who typically experience patchy hair loss in the neck region, which spreads to the scalp within 12 months. Similar to AA, BAA is associated with autoimmune diseases such as <i>H. pylori</i> and thyroiditis; however, BAA has no clear genetic pattern of inheritance which is observed in alopecia areata. Common dermoscopic findings in BAA include vellus white hairs and exclamation mark hairs, which may help distinguish it from other pathologies affecting facial hair. In clinical trials, the ALBAS tool offers clinicians an objective metric to evaluate BAA severity. Until recently, topical steroids have been the mainstay therapy; however, topical and oral janus kinase inhibitors are achieving improved results, with up to 75% beard regrowth in an average of 12 months.

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A paradoxical phenomenon: Intense pulsed light‐induced hypertrichosis, a brief review

Baah

Chacon

2020

Dermatological Reviews

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The advancement of laser and light therapies have allowed patients of all races and ethnicities access to different methods for removing unwanted hairs that can cause emotional distress and impact one's quality of life. Despite their effectiveness, these technologies are not without their risks, such as the well-known side effects of blister formation, erythema, crusting, and postinflammatory hypo-and hyperpigmentation. However, one adverse effect that seems to remain a clinical mystery is paradoxical hypertrichosis. Paradoxical hypertrichosis is the growth of fine, dark hair in treated areas or untreated areas close to the area treated on the face and neck, more frequently affecting those with darker skin (Fitzpatrick III-VI) and darker hair color, and most associated with those having undergone the intense pulsed laser and long-pulse alexandrite laser, although, this adverse reaction is likely common to all current and laser and light hair removal devices, despite the unknown prevalence and varying incidence rates. This phenomenon is not well understood, although explanations include the activation of dormant hair follicles by the intense pulse light flashlamp's suboptimal fluences and the synchronization of hair growth cycles caused by direct light stimulation.

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Alopecia: A review of laser and light therapies

Cited by 44 publications

References 0 publications

Androgenetic Alopecia: An Overview

Androgenetic Alopecia: An Overview

Alopecia Areata Barbae in a Nutshell

A paradoxical phenomenon: Intense pulsed light‐induced hypertrichosis, a brief review

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