ABSTRACT
Background: Androgenetic alopecia is the commonest type of alopecia affecting over half of men and women. Low-level light therapy is a new technique for stimulating hair growth in both genders. Aims: To overcome the shortcomings of previous epidemiological studies and a lack of controlled clinical trials on the subject, this study compared the effectiveness of adding low-level light therapy to minoxidil topical solution in the treatment of androgenetic alopecia in patients presenting to two skin clinics in Isfahan, Iran during 2014–2015. Materials and Methods: This clinical trial included 50 patients aged 17–45 presenting to Khorshid and Alzahra educational centers and skin diseases research center for androgenetic alopecia during 2014–2015. The patients were randomly divided into a control and a case group. The case group received topical minoxidil 5% solution plus low-level light therapy twice per day. The control group was given the same topical solution and a laser comb system that was turned off to act as a placebo. Changes in patients' hair density and diameter and its overall regrowth as well as their satisfaction with the treatment were assessed at months 0 (baseline), 3, 6, 9 and 12. Results: The percentage of recovery from androgenetic alopecia and the patients' satisfaction with their treatment were significantly higher in the case group compared to the control group. The patients' mean hair density and diameter were found to be higher in the case group after the intervention compared to the control group. Limitations: The study limitations included patient compliance, small sample size, patient insight due to novelty of the method and clinical judgement. Conclusion: As a new method of treatment, low-level light therapy can help improve the percentage of recovery from androgenetic alopecia and increase patients' satisfaction with their treatment.
ABSTRACT
Background: Autologous platelet-rich plasma has recently attracted signifi cant attention throughout the medical fi eld for its wound-healing ability. Aims: This study was conducted to investigate the potential of platelet-rich plasma combined with fractional laser therapy in the treatment of acne scarring. Methods: Sixteen patients (12 women and 4 men) who underwent split-face therapy were analyzed in this study. They received ablative fractional carbon dioxide laser combined with intradermal platelet-rich plasma treatment on one half of their face and ablative fractional carbon dioxide laser with intradermal normal saline on the other half. The injections were administered immediately after laser therapy. The treatment sessions were repeated after an interval of one month. The clinical response was assessed based on patient satisfaction and the objective evaluation of serial photographs by two blinded dermatologists at baseline, 1 month after the fi rst treatment session and 4 months after the second. The adverse effects including erythema and edema were scored by participants on days 0, 2, 4, 6, 8, 15 and 30 after each session. Results: Overall clinical improvement of acne scars was higher on the platelet-rich plasma-fractional carbon dioxide laser treated side but the difference was not statistically signifi cant either 1 month after the fi rst treatment session (P = 0.15) or 4 months after the second (P = 0.23). In addition, adverse effects (erythema and edema) on the platelet-rich plasma-fractional carbon dioxide laser-treated side were more severe and of longer duration. Limitations: Small sample size, absence of all skin phototypes within the study group and lack of objective methods for the evaluation of response to treatment and adverse effects were the limitations. Conclusion: This study demonstrated that adding platelet-rich plasma to fractional carbon dioxide laser treatment did not produce any statistically signifi cant synergistic effects and also resulted in more severe side effects and longer downtime.