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Laser revision of scars is a minimally invasive treatment that improves scar appearance by targeting vascular, pigmentary, and textural abnormalities. Various laser modalities, including ablative and nonablative fractional lasers, pulsed dye lasers, and Q-switched lasers, are used based on scar type and patient skin characteristics. Treatment aims to remodel collagen, reduce hypertrophy or atrophy, and normalize pigmentation. Pretreatment considerations, such as patient history, Fitzpatrick skin type, and prior interventions, are crucial for optimizing outcomes and minimizing complications. Adjunctive therapies, including topical agents and prophylactic antiviral treatment for herpes simplex virus, further enhance safety and efficacy. Clinicians participating in this course will gain a comprehensive understanding of laser-based scar revision, including patient selection, laser settings, and post-treatment care, while also developing proficiency in differentiating scar types and selecting appropriate laser modalities. The course will also cover strategies to mitigate complications such as postinflammatory hyperpigmentation, delayed wound healing, and recurrence. Participants will refine their skills in counseling patients on expected outcomes and integrating laser therapy into multimodal scar management, ultimately improving patient satisfaction and treatment success. Objectives: Identify appropriate laser modalities for different types of scars, including hypertrophic, atrophic, and keloidal scars. Differentiate between laser treatment parameters to optimize efficacy while minimizing risks such as postinflammatory hyperpigmentation and scarring. Assess scar characteristics, including pigmentation, pliability, and height, to guide individualized treatment plans. Communicate the importance of enhancing care coordination among the interprofessional team to improve care delivery for patients with scars and optimize patient outcomes. Access free multiple choice questions on this topic.

Scars result from the cutaneous wound healing process, leading to fibrosis and altered skin morphology. All wounds heal with some scar formation, and various scars can develop following surgery, trauma, and cutaneous inflammatory processes.[1] Scars can have significant cosmetic, physical, and psychological impacts on patients, prompting many to seek treatment. Various treatment modalities have been utilized, with increasing evidence demonstrating lasers' efficacy in improving different types of scars, including keloids, hypertrophic scars, atrophic scars, and acne scars.[2] Modern advancements in laser technology have enhanced the ability of laser devices to improve the appearance, symptoms, texture, and pliability of all scar types.[3][4][5]

The adverse effects of nonablative laser options are generally mild and include transient erythema, which resolves within 24 hours. Blistering, crusting, scarring, and postinflammatory hyperpigmentation are rare and occur most commonly in darker skin types.[2] The most frequently encountered side effect of PDL treatment is posttreatment purpura, lasting for up to 1 week.[29] Nonablative fractional resurfacing laser adverse effects include mild to moderate pain during treatment and erythema and edema posttreatment lasting up to 2 to 4 days.[24] Side effects of ablative laser resurfacing include temporary burning discomfort, oozing, crusting, ulceration, erythema, edema, acneiform eruptions, eczematous dermatitis, and infections.[24] Long-term adverse effects include dyspigmentation and scarring.[27] Erythema and edema typically worsen within the first 24 to 48 hours after treatment, with erythema occasionally lasting up to 4 months posttreatment. One study reported an average duration of posttreatment erythema for 1 month.[30] Transient postinflammatory hyperpigmentation occurs 2 to 4 weeks after treatment and is more common in darker skin phototypes. In a study of Fitzpatrick skin types III to V, 45.5% developed transient hyperpigmentation that resolved within 3 months in 90% of affected patients.[30] Fractional ablative laser resurfacing adverse effects are generally transient and less severe than fully ablative resurfacing.[29][27] Erythema, crusting, burning sensation, edema, and bruising were reported after fractional CO2 laser treatment.[27] Persistent erythema and postinflammatory pigmentary changes are less common complications when compared to fully ablative skin resurfacing.[27]

Effective laser revision of scars requires a multidisciplinary approach to optimize patient outcomes, minimize complications, and enhance patient satisfaction. Physicians and advanced practitioners must thoroughly understand laser physics, scar pathophysiology, and patient selection criteria to tailor treatments effectively. Nurses are crucial in preprocedural preparation, patient education, and posttreatment wound care, ensuring adherence to laser safety protocols and infection prevention measures. Pharmacists contribute by advising on prophylactic antiviral therapy for patients with a history of herpes simplex virus, as well as recommending adjunctive treatments such as topical retinoids, corticosteroids, or depigmenting agents to improve healing and reduce hyperpigmentation. Interprofessional communication and care coordination are essential in developing a comprehensive, patient-centered treatment plan. Regular collaboration among dermatologists, plastic surgeons, rehabilitation specialists, and primary care providers ensures continuity of care, particularly for patients with complex scars or underlying conditions that may impact healing. Standardized protocols for patient assessment, including scar classification, Fitzpatrick skin typing, and objective measurements, facilitate consistent documentation and treatment monitoring. By integrating evidence-based laser therapy with supportive interventions, healthcare teams can enhance procedural success, improve safety, and achieve optimal functional and aesthetic outcomes for patients undergoing scar revision.