Background: Acne scar is the most common complication in acne that occurs in about 49% of acne individuals. Fractional resurfacing lasers such as CO2 laser and erbium-doped yttrium aluminum garnet (Er: YAG) have been widely used for acne scar treatment and give satisfying results have complications such as pain, hyperpigmentation, infection, prolonged erythema, and scarring. Fractional erbium: yttrium scandium gallium garnet (Er: YSGG) laser solves previous laser techniques' disadvantages. It has an ideal wavelength of 2790 nm, which balances the epidermis layer's vaporization and thermal damage in the dermis's superficial layer. Platelet Rich Plasma (PRP) is an autologous concentration of human platelets in a small plasma volume that secreted various growth factors that can speed up the scar healing process.
Case report: A-24 years old male student came with a chief complaint of acne scars on his face four years before the examination. The patient's condition is classified as moderate-severe acne scarring based on Goodman and Baron's criteria (qualitative global acne scarring system). Acne scars treatment plan was single fractional erbium: YSGG laser for the left side of the face and combined fractional Er: YSGG laser with topical autologous PRP on the right side. This procedure was performed in 2 sessions with an interval of 4 weeks, the final evaluation at 12 weeks after the first procedure. Clinical improvement of acne scars was assessed using qualitative and quantitative scales based on Goodman and Baron's, patient and observer scar assessment scale (POSAS), quartile grading scale, and patient satisfaction level.
Conclusion: In the final evaluation, there was an improvement on the entire grading scale on the right side of the face (Er: YSGG laser + PRP) and the face's left side (Er: YSGG laser only). Post-treatment erythema was found on both sides of the patient's face but disappeared within three days on the face's right side and five days on the face's left side.