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The increasing use of hyaluronic acid (HA) implants has made adverse effects more apparent. Here, we present a rare case of massive allergic dermatitis due to HA injections. We performed dermoscopy and color ultrasound, which clarified that this was an allergic dermatitis caused by fillers, and analyzed the possible causes of the allergy. Common treatments were compared, and the advantages of 5-FU-based treatment regimens and their associated mechanisms were noted. A low dose of 5-fluorouracil and triamcinolone acetonide was administered to the patient's entire face and neck, and significant efficacy was achieved. We aimed to gather evidence on extensive dermatitis caused by HA injection, provide new perspectives and solutions for subsequent HA injections, and promote further research on the potential mechanisms of extensive skin inflammation and allergies caused by local HA injections. [ABSTRACT FROM AUTHOR]

Background The injection of botulinum toxin into the masseter muscle is an important method for improving hypertrophy. However, some patients may experience adverse reactions, such as sagging of the lower jaw. Therefore, we proposed a method of injecting botulinum toxin into the masseter and platysma muscles that would reduce masseter size and enhance the jawline. Objectives The aim of this study was to reduce the masseter size while enhancing the jawline. Methods Twenty patients received botulinum toxin injections into the masseter and platysma muscles. Pain levels were evaluated with the visual analog scale. All patients were photographed before and 6 months after treatment. Evaluations were performed based on standardized criteria. The lift index, reduction index, and symmetry index were performed to assess the degree of jawline elevation, masseter size reduction, and jawline symmetry before and after treatment. Results The mean visual analog scale score of the 20 patients was 2.80 (±1.24). The mean lift index score decreased from 4.93 (±0.34) to 4.53 (±0.37), P <.05. The mean reduction index score decreased from 3.13 (±0.27) to 2.74 (±0.27), P <.05. The mean symmetry index score changed from 0.0393 (±0.0296) to 0.0257 (±0.0246), P <.05. Conclusions Botulinum toxin injections into the masseter and platysma muscles through nerve block reduced the masseter size, elevated the jawline, and improved symmetry. Level of Evidence: 4 [ABSTRACT FROM AUTHOR]

ABSTRACT Background Aims Methods Results Conclusions Soft tissue filler injection is the second most commonly performed cosmetic procedure worldwide, with augmentation rhinoplasty being the most common filling surgery in Asian countries because Asians predominantly have a low nasal bridge. With the increasing pursuit of beauty, the adverse reactions after injection not only damage the patient's appearance but also greatly affect their quality of life. Therefore, exploring effective methods to address adverse reactions after nasal filler injections is necessary.Herein, we aimed to explore safe and effective drug doses and concentrations for the treatment of two patients who developed an allergic reaction after a nasal filling by intralesional drug injection.Two patients developed severe swelling and deformity of the nose after the injection of fillers 6 months to 1 year prior to presentation. High‐frequency ultrasound and local conditions revealed inflammation in the injected area. The patients were administered the combination of 0.7% triamcinolone acetonide, 0.42% 5‐fluorouracil, and 0.7% lidocaine into the affected area; they were followed up for 6 months.After three times of treatment, swelling and sclerosis disappeared after 44.5 ± 2.12 days. No adverse effects of the infections were observed.This drug regimen may represent a safe and effective therapeutic strategy for the treatment of complications after soft tissue filler injections. [ABSTRACT FROM AUTHOR]

Since the pioneering use of autologous costal cartilage for microtia reconstruction, significant progress has been made in treating microtia, effectively improving patients' quality of life and reducing their psychological burden. Cartilage auricle reconstruction is the primary treatment, but many postoperative complications can occur. Common postoperative complications include infection and hematoma at the recipient site, pleural tears at the donor site, and thoracic scoliosis. Among these, severe postoperative pneumonia is a rare but potentially fatal complication. This study presents a case of severe pneumonia after auricular reconstruction with autologous cartilage. It details the complications associated with autologous cartilage microtia reconstruction, especially pulmonary complications, and suggests a possible relationship between pulmonary complications and auricular reconstruction using cartilage., Competing Interests: The authors report no conflicts of interest., (Copyright © 2024 by Mutaz B. Habal, MD.)

Polycaprolactone-based fillers are commonly used in plastic surgery to improve facial aging. However, adverse vascular events following these injections have been reported. An arterial embolism is a rare but serious complication associated with injectable filler procedures. We report a case of arterial embolism in a 35-year-old woman who received a polycaprolactone-based dermal filler at the nasal base and was treated with a regimen containing 5-fluorouracil. We discuss the potential causes of the patient's condition and assess the superiority of our method over conventional approaches. Before treatment, ultrasound detected a decreased flow velocity in the patient's right medial canthus artery with distal hypoperfusion, which improved significantly posttreatment. Long-term follow-up revealed near-disappearance of facial scarring. Our treatment effectively addressed facial artery embolism without any reported adverse reactions., Competing Interests: The authors have no financial interest to declare in relation to the content of this article., (Copyright © 2024 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of The American Society of Plastic Surgeons.)