The effect of histopathologic analysis and tissue cultures on inpatient management of cellulitis: a randomized control trial.

BACKGROUND: In the absence of a gold-standard diagnostic modality for cellulitis, sterile inflammatory disorders may be misdiagnosed as cellulitis. OBJECTIVE: To determine the utility of skin biopsy and tissue culture for the diagnosis and management of patients admitted with a diagnosis of presumed cellulitis. DESIGN: Pilot single-blind parallel group randomized controlled clinical trial in 56 patients with a primary diagnosis of presumed cellulitis. In the intervention group only, skin biopsy and tissue culture results were made available to the primary care team to guide diagnosis and management. Length of hospital stay and antibiotic use were evaluated as outcome measures. RESULTS: Length of stay showed the greatest opportunity for further study as a primary outcome (intervention: 4, IQR (2-6) vs. control: 5 IQR (3-8) days; p = 0.124). LIMITATIONS: The COVID-19 pandemic placed limitations on participant enrollment and study duration; in addition, data was collected from a single medical center. CONCLUSION: This study demonstrates that length of stay and anti-pseudomonal antibiotic de-escalation are endpoints that may be influenced by biopsy and tissue culture results in presumed cellulitis patients; these outcomes warrant further study.

Afamelanotide for Treatment of the Protoporphyrias: Impact on Quality of Life and Laboratory Parameters in a US Cohort.

BACKGROUND: Erythropoietic protoporphyria (EPP) and X-linked protoporphyria (XLP) are rare disorders of heme biosynthesis characterized by severe cutaneous phototoxicity. Afamelanotide, an α-melanocyte-stimulating hormone analogue, is the only approved treatment for protoporphyria and leads to increased light tolerance and improved quality of life (QoL). However, published experience with afamelanotide in the US is limited. METHODS: Here, we report on all adults who received at least one dose of afamelanotide at the Massachusetts General Hospital Porphyria Center from 2021 to 2022. Changes in the time to phototoxic symptom onset, QoL, and laboratory parameters were assessed before and during treatment with afamelanotide. RESULTS: A total of 29 patients with protoporphyria were included, 26 of whom (72.2%) received ≥2 afamelanotide implants. Among the patients who received ≥2 implants, the median time to symptom onset following sunlight exposure was 12.5 min (IQR, 5-20) prior to the initiation of afamelanotide and 120 min (IQR, 60-240) after treatment (p < 0.001). Improvements in QoL during afamelanotide treatment were measured using two QoL tools, with good correlation observed between these two instruments. Finally, we found no improvements in the median levels of metal-free erythrocyte protoporphyrin, plasma protoporphyrin, or liver biochemistries during versus prior to the initiation of afamelanotide treatment. CONCLUSIONS: This study highlights a dramatic clinical benefit of afamelanotide in relation to light tolerance and QoL in protoporphyria, albeit without improvement in protoporphyrin levels or measures of liver function.

Poppers Dermatitis: A Systematic Review on a Unique Form of Contact Dermatitis in the MSM Community.

There are certain demographic characteristics that may serve as risk factors for exposure to a contact allergen. Volatile alkyl nitrites, colloquially known as "poppers," are commonly inhaled by men who have sex with men (MSM) for their psychoactive and muscle-relaxing effects. They have been reported to cause either allergic contact dermatitis (ACD) or irritant contact dermatitis (ICD), termed "poppers dermatitis." We searched PubMed, Embase, and Web of Science to understand the patient population, clinical presentation, diagnosis, and clinical course of poppers dermatitis. Our search returned 13 articles detailing 18 patients total. Most patient cases were male (n = 13/15; 87%), of whom 5 were MSM. The reports on the remaining 8 men did not disclose their sexual behaviors. The chemicals deemed responsible for adverse cutaneous side effects included amyl nitrite (6/18; 33%), butyl nitrite (3/18; 167%), isobutyl nitrite (2/18; 11%), and an unspecified alkyl nitrite (7/18, 39%). The most common diagnosis was ICD (10/18; 56%). Only 3 patients underwent alkyl nitrite patch testing, with 2 testing positive for ACD. The most commonly involved anatomic sites were perinasal (13/18; 72%) and perioral regions (10/18; 56%). Rash morphology has been described as yellow crusting, impetigo-like, eczematous, vesicular, edematous, and erythematous. Ulceration can occur with direct skin contact to concentrated nitrite solution. Poppers dermatitis was often self-limited with complete resolution. Dermatologists should consider poppers dermatitis in those presenting with a characteristic midfacial rash, especially in MSM.

Perceptions of telehealth among inpatient consultative dermatology providers and practice patterns during COVID-19.

Use of inpatient teledermatology increased during the COVID-19 pandemic. We surveyed the Society for Dermatology Hospitalists to better characterize the impact of COVID-19 on teledermatology use by inpatient dermatology providers, particularly on provider perceptions of teledermatology. Prior to the COVID-19 pandemic, 40% (8/20) of surveyed providers had used telehealth at their institution to help perform inpatient consults, while 90% (18/20) adapted use of teledermatology during the pandemic. 80% (16/20) reported that their opinion of teledermatology changed as a result of the COVID-19 pandemic, with the vast majority (87.5%, 14/16) reporting having a more positive opinion. Benefits of teledermatology included efficiency, ability to increase access safely, and ability for clinicians to focus on complex cases. Some providers expressed concerns over the potential implications regarding the perception of dermatology within medicine, limitations of inadequate photos, and breakdowns in communication with consulting teams and patients. Robust algorithms and or utilization criteria of teledermatology may help to mitigate risk, while increasing access to inpatient dermatologic evaluation.

Development of a Skin-Directed Scoring System for Stevens-Johnson Syndrome and Epidermal Necrolysis: A Delphi Consensus Exercise.

Importance: Scoring systems for Stevens-Johnson syndrome and epidermal necrolysis (EN) only estimate patient prognosis and are weighted toward comorbidities and systemic features; morphologic terminology for EN lesions is inconsistent. Objectives: To establish consensus among expert dermatologists on EN terminology, morphologic progression, and most-affected sites, and to build a framework for developing a skin-directed scoring system for EN. Evidence Review: A Delphi consensus using the RAND/UCLA appropriateness criteria was initiated with a core group from the Society of Dermatology Hospitalists to establish agreement on the optimal design for an EN cutaneous scoring instrument, terminology, morphologic traits, and sites of involvement. Findings: In round 1, the 54 participating dermatology hospitalists reached consensus on all 49 statements (30 appropriate, 3 inappropriate, 16 uncertain). In round 2, they agreed on another 15 statements (8 appropriate, 7 uncertain). There was consistent agreement on the need for a skin-specific instrument; on the most-often affected skin sites (head and neck, chest, upper back, ocular mucosa, oral mucosa); and that blanching erythema, dusky erythema, targetoid erythema, vesicles/bullae, desquamation, and erosions comprise the morphologic traits of EN and can be consistently differentiated. Conclusions and Relevance: This consensus exercise confirmed the need for an EN skin-directed scoring system, nomenclature, and differentiation of specific morphologic traits, and identified the sites most affected. It also established a baseline consensus for a standardized EN instrument with consistent terminology.

A description of Kaposi sarcoma risk factors and outcomes in HIV-positive and HIV-negative patients at a tertiary care medical center from 2005 to 2020.

Kaposi sarcoma (KS) is a low-grade vascular malignancy caused by human herpesvirus-8 (HHV-8), also known as Kaposi's sarcoma-associated herpesvirus (KSHV). There are four established subtypes of KS, which are described by unique risk factors, presentation, and disease course. A "non-epidemic" variant to describe HIV-negative men who have sex with men (MSM) is emerging as a fifth subtype. We retrospectively examined patients with KS at an academic medical center in central Ohio, USA. To our knowledge, this is the first US-based report to describe KS risk factors and outcomes in the context of HIV status. Data were extracted from patient charts including demographic information, history at time of KS diagnosis, and information about KS disease course. HIV-positive and HIV-negative patients were grouped into established categories. HIV-negative patients who did not fit an existing subtype were described as "Unclassified-KS-Type." Demographic characteristics for AIDS-KS patients in our cohort match established trends in this subtype, such as male, MSM, and younger age at diagnosis compared to HIV-negative patients. Most Unclassified-KS-Type patients fit well into the emerging "non-epidemic KS" subtype. These patients are described as healthy, middle-aged, HIV-negative MSM with lower extremity lesions. This descriptive report provides an updated view of KS risk factors and outcomes to improve detection and treatment in dermatology.

Hospital triage and skin disease: hospital outcomes are differentially associated with cutaneous morphology.

BACKGROUND: Determining the exact dermatologic diagnosis is difficult in the inpatient setting. OBJECTIVE: Determine whether morphologic classification rather than specific diagnosis is associated with hospital outcomes. METHODS: Retrospective single-center study. Information from 1798 inpatient dermatology consults at The Ohio State University Wexner Medical Center from 2012 to 2014 was queried. Dermatologic diseases were categorized into 16 groups based on appearance. Logistic regression was performed comparing mortality rate vs morphology. Linear regression was performed comparing the length of stay (LOS) vs morphology. RESULTS: Morphology was associated with a mortality rate (P = 0.038). The morphologic subgroups acneiform/follicular/occlusion (P = 0.011), blistering disorders (P = 0.009), retiform purpura (P = 0.011), and vasculitis/vascular (P = 0.007) were associated with increased mortality. Morphology was associated with LOS (P = 0.004), and the morbilliform subgroup was associated with increased LOS (P < 0.001). CONCLUSION: This study demonstrated the importance of morphologic diagnosis and its association with mortality rate and LOS. This information may help triage cutaneous disorders in the inpatient setting and determine the relative risk of dermatologic conditions when assessing the need for hospital transfers and more aggressive therapies.

Mpox in Young Woman with No Epidemiologic Risk Factors, Massachusetts, USA.

We describe a case of mpox characterized by a circularly distributed facial rash but no identified risk factors. Fomite transmission of monkeypox virus from contaminated linen at a massage spa was suspected. Clinicians should consider mpox in patients with consistent clinical syndromes, even in the absence of epidemiologic risk factors.