Synergistic effect of platelet‐rich plasma in combination with fractional carbon dioxide laser versus its combination with pulsed dye laser in striae distensae: A comparative study

Abstract Background Striae distensae (SD) are very common atrophic cutaneous scarring that are therapeutically challenging. Various kinds of laser had been suggested as effective treatment modalities for SD. In addition, platelet‐rich plasma (PRP) was recently recommended for its therapy. Objective To evaluate the synergistic role of PRP injection as a combined modality to fractional CO 2 laser (Fr CO 2 ) versus its combination with pulsed dye laser (PDL) in SD. Patients and methods Thirty SD patients were included in this study and treated by intradermal injection of autologous PRP on both sides, followed by laser therapy (Fr CO 2 laser on right side and PDL on left side). They received 3 treatment sessions at 6 weeks interval. Results Both treatment sides reported significant clinical improvements of SD lesions, evidenced by significant reduction of width of striae lesions and significant improvement of skin texture. Furthermore, significantly higher degree of clinical improvements were observed in response to treatment sessions by combined PRP with Fr CO 2 laser rather than combined PRP with PDL. Generally, post‐inflammatory hyperpigmentation (PIH) were mild in all patients. Histopathologically, SD lesions showed improvement of epidermal thickness, and more homogenization and regular orientation of dermal collagen fibers in both treatment sides, with more significant improvement on the side treated by combined PRP with Fr CO 2 laser sessions rather than the other side. Conclusions PRP injection in combination with Fr CO 2 laser or PDL is considered safe and effective therapeutic regimens for SD. However, its combination with Fr CO 2 laser is more promising with better outcome and fewer side effects.