Increasing a Dermatologist's Footprint on Instagram: An Analysis of Top Influencers Performing Nonsurgical Cosmetic Procedures.

BACKGROUND: Patients use social media to find information about cosmetic procedures, yet dermatologists historically lack a social media presence. Misleading information from nonexperts is potentially harmful. OBJECTIVE: To identify the top influencers posting about nonsurgical cosmetic procedures on Instagram, verify their credentials, and analyze their content to empower dermatologists to effectively join the online conversation, combat harmful misinformation, and preserve the expertise and influence of board-certified dermatologists. METHODS AND MATERIALS: Using the Klear marketing platform, Instagram influencers with more than 50,000 followers were identified. Influence rating, top posts, and other metrics were extracted using proprietary algorithms. RESULTS: Ninety nine influencers were identified. Of the top 10, 70% were board-certified plastic surgeons. Physicians not board-certified in a core cosmetic specialty had the highest influencer rating and number of followers. The most popular posts were of before and after photographs and personal posts. CONCLUSION: Dermatologists may be able to increase their Instagram footprint by posting frequently, especially of before and after and personal photographs, using hashtags, Instagram live and Instagram television, and Instagram stories. It is important for the dermatology community to find a way to ethically navigate social media to have a seat at the table and meet patients where they are.

Analysis of lesional color to differentiate infantile hemangiomas from port-wine birthmarks in infants less than 3 months old: A pilot study.

BACKGROUND: In their early phase, infantile hemangiomas (IH) can sometimes be difficult to differentiate from port-wine birthmarks (PWB). Until recently, inexpensive diagnostic tools have not been readily available. OBJECTIVE: To determine the diagnostic utility of widely available colorimetric technology when differentiating PWB from IH in photographs of infants less than 3 months old. METHODS: Multi-center, retrospective analysis of RGB (red, green, and blue) and HSL (hue, saturation, lightness) values collected using electronic colorimeters from images of clinically confirmed untreated IH or PWB. Subgroup analysis of flat vascular birthmarks was subsequently performed. RESULTS: Images of 119 IH (specifically, 45 flat IH) and 59 PWB were identified. PWB had significantly (P < .001) higher RGB values of all primary colors, most notably for blue and green (mean difference: >50), irrespective of thickness. RGB or RGB with HSL values had an excellent accuracy (90%), sensitivity (92%), specificity (98%), and positive predictive value (98%) when discriminating PWB from flat IH. IH could be distinctly clustered from PWB when combining their RGB with HSL values. CONCLUSION: Electronic colorimeters with emphasis on blue and green values, are able to differentiate PWB from IH, irrespective of thickness, with a high degree of accuracy. A larger scale evaluation is now required.

Vulvovaginal manifestations in Stevens-Johnson syndrome and toxic epidermal necrolysis: Prevention and treatment.

The prevalence of acute vulvovaginal involvement in toxic epidermal necrolysis can be as high as 70%; up to 28% of female patients will also develop chronic vulvovaginal sequelae. There is little consensus regarding prevention and treatment of the gynecologic sequelae of both Stevens-Johnson syndrome and toxic epidermal necrolysis (SJS/TEN). We review acute and chronic sequelae, including erosions, scar formation, chronic skin changes, urethral complications, adenosis, malignant transformation, vulvodynia, and dyspareunia. We provide comprehensive recommendations for acute and long-term vulvovaginal care in adult and pediatric SJS/TEN patients. Treatment should include an ultrapotent topical steroid, followed by a nonirritating barrier cream applied to vulvar and perineal lesions. A steroid should be used intravaginally along with vaginal dilation in all adults (but should be avoided in prepubertal adolescents) with vaginal involvement. Menstrual suppression should be considered in all reproductive age patients until vulvovaginal lesions have healed. Last, referrals for pelvic floor physical therapy and to surgical subspecialties should be offered on a case-by-case basis. This guide summarizes the current available literature combined with expert opinion of both dermatologists and gynecologists who treat a high volume of SJS/TEN patients.

Laser Treatment of Darier Disease: Report of Two Cases and Systematic Review of the Literature.

Introduction: Darier disease (DD) is a chronic disease with high morbidity and limited treatment options. Laser efficacy in the treatment of DD remains understudied. Methods: A literature search conducted between 07/21/2017 and 05/05/2018 identified all original cases of DD treated with laser therapy. Results: Outcomes from 24 patients were reviewed, 22 patients were identified in the literature and 2 cases are included from our institution. Five types of lasers were identified [CO2 laser, Er:YAG laser, pulse dye laser [PDL], diode laser, erbium-doped fiber laser], with CO2 (46%) and PDL (42%) being the most common. Seventy-nine percent of patients were treated with more than one procedure (average, 3 procedures). The estimated body surface treated with each session ranged from 5%-50%. The most common adverse events came from CO2 and Er:YAG lasers and included dyspigmentation, pain, and post-laser erythema and edema. The time to response (mode, 1 month) was only reported in half of the studies. Conclusion: Laser treatments appear to be a promising alternative to standardized therapies in DD.

Recommendations for Prevention of Drug Re-Exposure in Toxic Epidermal Necrolysis

Drug re-exposure resulting in Stevens-Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN) is a rare phenomenon and has scarcely been reported. With an aging population, polypharmacy, and a lack of a unified electronic medical record, standard recommendations to prevent or minimize the risk of re-exposure are necessary. We identified five patients, with diagnosis confirmed SJS/TEN, and determined the clinical characteristics and contributing risk factors leading to re-exposure. Polypharmacy, multiple prescribers, advanced age, medical illiteracy, retention of discontinued medications and self-prescribing all contributed to re-exposure in this cohort of patients. This case series demonstrates the potentially deadly effect of drug re-exposure, and the need for both streamlined and integrated medication allergy documentation systems. J Drugs Dermatol. 2019;18(10):1049-1052.

Clinical Pathologic Mismatch in a TNF-α Inhibitor-Associated Drug Reaction

A 56-year-old Caucasian male with a history of chronic plaque psoriasis, primary sclerosing cholangitis status-post liver transplant on tacrolimus, and ulcerative colitis on infliximab developed a progressive erythematous eruption with associated fatigue, anorexia, myalgias, and arthralgias. On two separate occasions, his skin biopsy demonstrated a lichenoid interface dermatitis (LID). Despite multiple courses of oral prednisone, topical steroids, and a short course of hydroxychloroquine, his symptoms continued to relapse and remit. When a temporal association between increasing his infliximab dose and the global progression of his disease was identified, he was ultimately diagnosed with a TNF-α inhibitor-induced psoriasis flare. Despite the patient's long-standing history of psoriasis, a plausible psoriasis rebound reaction after systemic steroids was not strongly considered in light of his histopathology. Though lichenoid interface dermatitis is a commonly reported histologic finding in patients on TNF-α inhibitors, it has scarcely been reported in patients with psoriasiform eruptions clinically.

Idiopathic toxic epidermal necrolysis in an adolescent.

A 10-year-old girl, suspected 2 days prior to have streptococcal pharyngitis, presented with diffuse erythema, tense bullae, Nikolsky-positive desquamation, as well as ulcerations of her oral and genital mucosa. She denied recent travel, sick contacts, or preceding and concurrent use of medications, including over-the-counter and herbal supplements. A comprehensive viral polymerase chain reaction (PCR) panel, Mycoplasma pneumoniae PCR and IgM, streptococcal molecular antigen test, urine culture, blood culture, and rheumatologic serologies were negative. Based on the patient's clinical presentation and biopsy results, she was diagnosed with idiopathic toxic epidermal necrolysis.

Late growth of infantile hemangiomas in children >3 years of age: A retrospective study.

BACKGROUND: The proliferative phase of infantile hemangiomas (IHs) is usually complete by 9 months of life. Late growth beyond age 3 years is rarely reported. OBJECTIVE: To describe the demographic and clinic characteristics of a cohort of patients with late growth of IH, defined as growth in a patient >3 years of age. METHODS: A multicenter, retrospective cohort study. RESULTS: In total, 59 patients, 85% of which were female, met the inclusion criteria. The mean first episode of late growth was 4.3 (range 3-8.5) years. Head and neck location (55/59; 93%) and presence of deep hemangioma (52/59; 88%) were common characteristics. Posterior fossa malformations, hemangiomas, arterial anomalies, cardiac defects, eye abnormalities (PHACE) syndrome was noted in 20 of 38 (53%) children with segmental facial IH. Systemic therapy (corticosteroid or ß-blocker) was given during infancy in 58 of 59 (98%) and 24 of 59 (41%) received systemic therapy (ß-blockers) for late IH growth. LIMITATIONS: The retrospective nature and ascertainment by investigator recall are limitations of the study. CONCLUSION: Late IH growth can occur in children after 3 years of age. Risk factors include head and neck location, segmental morphology, and involvement of deep dermal/subcutaneous tissues.