Vascular Features of Nail Psoriasis Using Dynamic Optical Coherence Tomography.

BACKGROUND: Nail psoriasis is a painful and disfiguring nail disease that often leads to invasive biopsies. Dermoscopy of the hyponychium can be useful in the diagnosis showing twisted coiled vessels. Structural features of nail psoriasis have been described with optical coherence tomography (OCT). OBJECTIVES: To investigate vascular features of nail psoriasis using dynamic OCT. METHODS: This was an observational, prospective, controlled study in which psoriasis patients with psoriatic nail changes and healthy control patients underwent OCT imaging of the distal nail plate and proximal nail fold. Vertical and horizontal OCT images were analyzed to describe structural and vascular features and to quantify blood flow at depth. RESULTS: Sixteen psoriatic nails and 16 control nails were included. Psoriatic nails had significantly increased blood flow in the proximal nail fold at depths of 0.72 mm (p = 0.035) and 0.76 mm (p = 0.027). Nail thickness was significantly greater in psoriatic nails compared to control nails (p = 0.0016). Compared to control nails, psoriatic nails had dilated, disorganized blood vessels superficially in the proximal nail fold. LIMITATIONS: The main limitation of our study is the relatively small sample size. CONCLUSIONS: OCT can identify structural and vascular features specific to nail psoriasis.

Morbihan disease complicated by dermatosis neglecta: An unique presentation.

Morbihan disease, also referred to as solid facial edema, or rosacea lymphedema, is a rare disorder that involves chronic erythema and solid edema of the cheeks, eyelids, forehead and glabella and may arise as a complication of acne vulgaris or rosacea. Of note, it may be the only initial presenting symptom of these associated diseases. Few cases have been described in the literature, as its first description by Robert Degos in 1957. The condition is characterized by its chronicity, a typical clinical appearance and the lack of specific histopathologic or laboratory findings. The condition may wax and wane but typically does not resolve without treatment. Many cases of this condition tend to be recalcitrant to therapy, with topical and oral antibiotics regimens commonly used for rosacea generally being ineffective. The disease may easily go undiagnosed, as it mimics other more common skin conditions. We present a case of originally undiagnosed Morbihan disease mistaken for an atypical allergic rash, resistant to treatment, and complicated by dermatosis neglecta.

A review on laser and light-based therapies for alopecia areata.

Alopecia areata is a form of non-scarring alopecia that results from a hyperactive immune response of T cells against hair follicles. Many patients with visible hair loss experience psychological and emotional distress, as a result of their cosmetic disfigurement, and frequently seek treatment. However, existing treatment methods, such as corticosteroids, topical irritants, sensitizing agents, immunosuppressants, and psoralen plus ultraviolet light A, may result in various adverse effects and often lack efficacy. Laser and light treatments offer a safe and effective alternative. This review aims to provide clinicians with a comprehensive summary of laser and light-based modalities used for the treatment of alopecia areata. Currently, the excimer laser is the most widely studied device and has shown positive results thus far. However, the development of future randomized controlled clinical trials will help determine the appropriate treatment protocols necessary, in order to achieve superior clinical outcomes.

Origin of the Zika virus revealed: a historical journey across the world.

BACKGROUND: Zika virus (ZIKV) is an arbovirus within the Flaviviridae family, the recent spread of which has promoted public concern. METHODS: This study outlines the clinical features, potential for teratogenicity, diagnosis, and treatment of ZIKV infection. RESULTS: Zika virus is transmitted through the bite of an infected Stegomyia (= Aedes) mosquito, blood transfusion, sexual intercourse, and perinatal routes. Infection has been characterized as mildly symptomatic. Symptoms include mild fever, headache, arthralgia, myalgia, non-purulent conjunctivitis, and a pruritic maculopapular rash. It is rarely life-threatening, but both Guillain-Barré syndrome and fetal microcephaly have been reported. ZIKV belongs to the same family as bovine viral diarrhea virus, which causes hydrocephalus and microcephaly in newborn calves, and hepatitis C virus, which can be vertically transmitted in human pregnancies, and hence there remains concern for potential similarities. Diagnostic methods include polymerase chain reaction performed in blood samples during infection, and in urine and saliva. Pregnant women undergo antibody testing for immunoglobulin M. Treatment involves supportive care, and acetaminophen and antihistamines to control symptoms. CONCLUSIONS: Although there was no evidence of the circulation of ZIKV in the Western hemisphere prior to 2014, the global spread of Stegomyia aegypti and increases in urban populations and international travel have fostered its evolution. Adherence to current guidelines for the prevention of ZIKV transmission is especially relevant in regions experiencing ongoing outbreaks. Concern for microcephaly in newborns warrants further investigation into the potential long-term effects of ZIKV infection, especially in relation to reproductive health and mother-fetus transmission.

Wandering liver and intestinal malrotation: first report.

A wandering liver is a rare development in both the adult and pediatric population where the liver is freely displaced along a transverse axis. We describe the first known occurrence in published literature of a wandering liver in an adult individual who also had an intestinal malrotation complicated by a midgut volvulus. The abnormal ability for a liver to wander presents a highly unusual anatomy that can be disorienting. Laparoscopic surgery is a viable option in reducing a midgut volvulus and addressing an intestinal malrotation in the presence of a wandering liver. This unusual presentation educates clinicians to avoid potential misdiagnosis given the abnormal location of the duodenum, appendix, liver, and gallbladder.

Utilization of Optical Coherence Tomography in the Evaluation of Cherry Hemangiomas.

Cherry hemangiomas are common vascular proliferative lesions that can be concerning from a cosmetic perspective. Laser therapy is often used to eradicate cherry hemangiomas, but some lesions require multiple treatments or do not resolve at all. The suboptimal response to laser treatment may be due to limitations in penetration depth by vascular lasers such as the pulsed dye laser. Optical coherence tomography is a low-energy, light-based imaging device that can evaluate the depth and extent of vascular lesions such as cherry hemangiomas by allowing visualization of tissue structure and blood vessel architecture, which cannot be appreciated by clinical or dermatoscopic examination alone. We present optical coherence tomography images of a cherry hemangioma to demonstrate the precision and resolution of this imaging modality. Optical coherence tomography provides valuable information that has the potential to predict response to laser therapy without unnecessary attempts. Future prospective studies will determine its value for this purpose.

J Drugs Dermatol. 2016;15(6):713-714.

Patient Preference in Dermatologist Attire in the Medical, Surgical, and Wound Care Settings.

IMPORTANCE: Patients' perceptions of their physician can affect subjective and objective outcomes. Physician attire influences patients' perceptions of their physician and consequently may affect patient outcomes. OBJECTIVE: To determine patient preferences for different types of dermatologist attire in dermatology medical, surgical, and wound care clinics. We hypothesized that patients in the dermatology medical setting would prefer professional attire, while patients in the dermatology surgical and wound care setting would prefer surgical scrubs. DESIGN, SETTING, AND PARTICIPANTS: This study analyzed responses to a cross-sectional, anonymous survey by English-speaking dermatology patients (aged 18 years or older) at general, surgical, and wound care clinics in an academic center in Miami, Florida. Patients who could not read and understand the survey were excluded. Participants received pictures of a physician wearing business attire, professional attire, surgical attire, and casual attire, and responded by indicating which physician they preferred for each of 19 questions. Frequencies of responses were recorded, and χ2 and regression tests were performed. MAIN OUTCOMES AND MEASURES: Response frequencies. RESULTS: Surveys were administered to 261 persons, and 255 participated and completed enough of the questions to be included in the outcome analyses (118 men, 121 women, 22 unknown [did not answer sex question]), mean (SD) age, 56.3 (18.6) years; about 49% of those who reported their sex were men; 56% were Hispanic; and 85% were white. Approximately 72% of respondents held a college degree or higher. About 63%, 24%, and 13% of respondents were medical, surgical, and wound care dermatology patients, respectively. Roughly 73%, 19%, 6%, and 2% of cumulative responses were for professional, surgical, business, and casual attire, respectively. Respondents who received a picture of a black male or black female physician were more likely to exclusively prefer professional attire: unadjusted odds ratios (ORs) 3.21 (95% CI, 1.39-7.42) and 2.78 (95% CI, 1.18-6.51), respectively, compared with respondents who received a picture of a white male physician. Nonwhite and unemployed respondents were less likely to prefer professional attire exclusively: ORs, 0.28 (95% CI, 0.1-0.83) and 0.28 (95% CI, 0.08-0.99), respectively. Respondents preferred professional attire in all clinic settings, though respondents in the dermatology surgery clinic were less likely to prefer professional attire compared with respondents in the medical dermatology clinic: race-adjusted OR, 0.74 (95% CI, 0.56-0.98). Wound care and medical dermatology respondents preferred professional attire comparably. CONCLUSIONS AND RELEVANCE: In this study, most patients preferred professional attire for their dermatologists in most settings. It is possible that patients' perceptions of their physicians' knowledge and skill is influenced by the physicians' appearance, and these perceptions may affect outcomes.

Local anesthesia injection technique for aesthetic removal of dermal nevi.

Dermatologists should be aware of the surgical techniques that reduce the level of skin distortion following biopsy procedures. (1) a dilution of lidocaine with bacteriostatic 0.9% sodium chloride and (2) injection of the solution directly into the nevus. The nevus balloons in size and shape and becomes tenser resulting in a change in the skin level permitting for easy shave. Good injection technique of anesthesia may represent a simple, but important means to improve postoperative cosmetic outcomes.

Laser and light-based treatments of venous lakes: a literature review.

Venous lake is a benign vascular malformation commonly seen in elderly patients, typically arising in sun-exposed areas of the body. Patients often seek treatment to prevent recurrent bleeding or because they find the lesion cosmetically unacceptable. Venous lake may negatively affect quality of life, due to the cosmetic disfigurement it can create and the resulting psychological distress. Traditional treatments, such as surgical excision, cryosurgery, sclerotherapy, and electrocoagulation, result in varying degrees of success and can cause discomfort. Laser- and light-based treatment modalities may offer a safe and effective alternative, as numerous studies have shown their benefit in the treatment of venous lakes, particularly with the long-pulsed 1064-nm neodymium-doped yttrium aluminum garnet (Nd:YAG). Although various types of lasers and lights have been studied, there remains a lack of general consensus as to which one is the superior laser modality. Further studies that establish standardized protocols to compare the results of using different types of laser treatments are warranted.

The picosecond laser for tattoo removal.

The prevalence of tattoos continues to grow as modern society's stigma towards this form of body art shifts towards greater acceptance. Approximately one third of Americans aged 18-25 and 40 % of Americans aged 26-40 are tattooed. As tattoos continue to rise in popularity, so has the demand for an effective method of tattoo removal such as lasers. The various colors of tattoo inks render them ideal targets for specific lasers using the principle of selective photothermolysis. Traditional laser modalities employed for tattoo removal operate on pulse durations in the nanosecond domain. However, this pulse duration range is still too long to effectively break ink into small enough particles. Picosecond (10-12) lasers have emerged at the forefront of laser tattoo removal due to their shorter pulse lengths, leading to quicker heating of the target chromophores, and consequently, more effective tattoo clearance. Recent studies have cited more effective treatment outcomes using picosecond lasers. Future comparative studies between picosecond lasers of various settings are necessary to determine optimal laser parameters for tattoo clearance.