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Skin hyperpigmentation

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https://www.readbyqxmd.com/read/27912751/anti-aging-and-tyrosinase-inhibition-effects-of-cassia-fistula-flower-butanolic-extract
#1
Pornngarm Limtrakul, Supachai Yodkeeree, Pilaiporn Thippraphan, Wanisa Punfa, Jatupol Srisomboon
BACKGROUND: Natural products made from plant sources have been used in a variety of cosmetic applications as a source of nutrition and as a whitening agent. The flowers of Cassia fistula L, family Fabaceae, have been used as a traditional medicine for skin diseases and wound healing and have been reported to possess anti-oxidant properties. The anti-aging effect of C. fistula flower extract on human skin fibroblast was investigated. METHODS: The butanolic extraction of C...
December 3, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27911117/are-lasers-superior-to-lights-in-the-photoepilation-of-fitzpatrick-v-and-vi-skin-types-a-comparison-between-nd-yag-laser-and-intense-pulsed-light
#2
Bibilash Bs, Ravi Kumar Chittoria, Devinder Mohan Thappa, Devi Prasad Mohapatra, Friji M T, Dineshkumar S, Sandhya Pandey
BACKGROUND AND OBJECTIVES: There are no large volume comparative studies available to compare the efficacy of lasers over lights for hair removal in Fitzpatrick V and VI skin types. This study is designed to compare the efficacy of Nd:YAG Laser versus IPL in the darker skin types. STUDY DESIGN/MATERIALS AND METHODS: Thirty nine patients included in Group-1 were treated with Nd:YAG and 31 in group-2 with IPL. Both groups received 5 sessions of treatment. The hair counts were assessed using digital photography and manual counting method before and after treatment and results were analysed...
December 2, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27904268/clinicopathological-features-and-immunohistochemical-alterations-of-keratinocyte-proliferation-melanocyte-density-smooth-muscle-hyperplasia-and-nerve-fiber-distribution-in-becker-s-nevus
#3
Ping Sheng, Yun-Long Cheng, Chuan-Chuan Cai, Wei-Jin Guo, Ying Zhou, Ge Shi, Yi-Ming Fan
BACKGROUND: Although Becker's nevus (BN) is a relatively common disease, the systematic studies of clinicopathological and immunohistochemical results are poorly reported. OBJECTIVE: To investigate the clinicopathological features and immunohistochemical alterations of keratinocyte proliferation, melanocyte density, smooth muscle hyperplasia and nerve fiber distribution in BN. METHODS: Clinical and pathological data were collected in 60 newly-diagnosed BN cases...
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27904206/reticulate-pigmentation-associated-with-scarring-alopecia-in-an-elderly-woman-an-unusual-manifestation-of-lichen-planus-pigmentosus
#4
Vinod Kumar Sharma, Neetu Bhari, Sweta Subhadarshani, Neha Taneja, Rakesh Kumar Deepak
A 70-year-old woman presented with generalized reticulate pigmentation, scarring alopecia, and few discrete, violaceous plaques over the trunk and forearm. Dermoscopic evaluation of the reticulate plaque showed reticulate hyperpigmentation with multiple telangiectasias, and skin biopsy showed lichenoid interface dermatitis with marked pigment incontinence. Thus, a final diagnosis of poikiloderma due to lichen planus pigmentosus was considered.
November 2016: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/27879178/-minocycline-induced-hyperpigmentation-not-uncommon-but-nonetheless-important-to-recognise
#5
P J G M Voets, D Blommaert, R R M C Keijsers, H A C Alkemade
BACKGROUND: Minocycline, a broad-spectrum antibiotic from the group of tetracyclins, is frequently prescribed for acne vulgaris and rosacea. Hyperpigmentation is a relatively common side effect of this drug and can lead to multiple unsightly skin lesions, which are not always reversible. It can take a long period, from a few months to several years, before the lesions have completely vanished. CASE DESCRIPTION: A 24-year-old male was seen in our outpatient clinic because of slowly progressive pigmented lesions on his shins...
2016: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/27875703/prevalence-and-characterization-of-neonatal-skin-disorders-in-the-first-72h-of-life
#6
Flávia Pereira Reginatto, Damie DeVilla, Fernanda M Muller, Juliano Peruzzo, Letícia P Peres, Raquel B Steglich, Tania F Cestari
OBJECTIVE: To determine the prevalence of neonatal dermatological findings and analyze whether there is an association between these findings and neonatal and pregnancy characteristics and seasonality. METHODS: Newborns from three maternity hospitals in a Brazilian capital city were randomly selected to undergo dermatological assessment by dermatologists. RESULTS: 2938 neonates aged up to three days of life were randomly selected, of whom 309 were excluded due to Intensive Care Unit admission...
November 19, 2016: Jornal de Pediatria
https://www.readbyqxmd.com/read/27875092/morphological-variability-of-demodex-cati-in-a-feline-immunodeficiency-virus-positive-cat
#7
Elien R L Taffin, Stijn Casaert, Edwin Claerebout, Thomas J J Vandekerkhof, Sophie Vandenabeele
CASE DESCRIPTION A 17-year-old FIV-positive cat was evaluated because of weight loss during the preceding few months. The cat had a weight loss of 0.5 kg (1.1 lb) during the last month. Because of its FIV-positive status, the cat was confined indoors. CLINICAL FINDINGS A large nonpruritic area of alopecia with hyperpigmentation and comedones was present on the right lateral aspect of the neck. The chin had diffuse alopecia and comedones. Mild alopecia was present on the dorsal aspect of the muzzle. Trichography and microscopic examination of acetate tape imprint preparations and skin scrapings revealed a very morphologically heterogeneous population of Demodex mites...
December 1, 2016: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/27870929/a-clinical-study-of-cutaneous-changes-in-pregnancy
#8
Vinitha V Panicker, Najeeba Riyaz, P K Balachandran
BACKGROUND/OBJECTIVE: Pregnant women experience a myriad of physiological and metabolic changes that affect different organ systems in the body. Cutaneous and appendageal alterations that manifest during pregnancy are largely modulated by hormonal, immunologic, and metabolic factors. Detailed reports encompassing physiological changes and specific dermatoses of pregnancy and effects of various dermatoses on pregnant women are scanty in literature. This study was conducted to examine in detail both physiological changes and specific dermatoses...
November 18, 2016: Journal of Epidemiology and Global Health
https://www.readbyqxmd.com/read/27857656/reverse-flow-anterolateral-thigh-perforator-an-ad-hoc-flap-for-severe-post-burn-knee-contracture
#9
H A Ismail, L E El-Bassiony
We evaluate function outcomes of the reverse-flow ALT perforator flap to reconstruct severe post-burn knee contracture. Between October 2012 and December 2014, 10 patients with severe post-burn knee contracture were subjected to reconstruction with 10 ipsilateral reversed-flow ALT perforator flaps. All the patients were male. Ages ranged from 15 to 47 years (mean = 32 years). Time from burn injury to patient presentation ranged from 2-8 months. All patients demonstrated post-burn flexion contracture of the knee joint, ranging from 35 to 75 degrees...
March 31, 2016: Annals of Burns and Fire Disasters
https://www.readbyqxmd.com/read/27853342/theoretical-review-of-the-treatment-of-pigmented-lesions-in-asian-skin
#10
Taro Kono, Samantha Y Shek, Henry H L Chan, William F Groff, Kotaro Imagawa, Tadashi Akamatsu
Asian skin has a higher epidermal melanin content, making it more likely to develop adverse pigmentary reactions following laser surgery. The nanosecond lasers are the gold standard for the treatment of pigmented lesions, but the risk of complications, such as post-inflammatory hyperpigmentation, is increased in dark-skinned patients. Intense Pulsed Light (IPL) or long-pulsed lasers are available for treating superficial pigmented lesions, and fewer complications are seen when using these devices compared to the nanosecond lasers...
October 1, 2016: Laser Therapy
https://www.readbyqxmd.com/read/27852057/novel-mutations-c-28g-t-p-ala10ser-and-c-189g-t-p-glu63asp-in-wdr62-associated-with-early-onset-acanthosis-and-hyperkeratosis-in-a-patient-with-autosomal-recessive-microcephaly-type-2
#11
Santasree Banerjee, Huishuang Chen, Hui Huang, Jing Wu, Zhiyun Yang, Weiping Deng, Dongna Chen, Jianlian Deng, Yan Su, Yang Li, Chao Wu, Ye Wang, Hao Zeng, Yiming Wang, Xunhua Li
Microcephaly (MCPH) is a developmental disorder characterized by reduced brain size and intellectual disability. A proportion of microcephaly is caused by defects in a single gene. Microcephaly 2 (MCPH2) is one of the most frequent subtypes of MCPH.WD repeat-containing protein 62 gene (WDR62) is the most frequently mutated gene in MCPH2 patients. Phenotypes involving dermatological changes in MCPH2 have not been reported. We have identified and investigated a 5-year-old Chinese girl with markedly reduced brain size (86% of normal size), intellectual disability and psychomotor developmental delay...
November 10, 2016: Oncotarget
https://www.readbyqxmd.com/read/27843871/reversible-ecchymosis-and-hyperpigmented-lesions-a-rare-presentation-of-dietary-vitamin-b12-deficiency
#12
Hans Raj Pahadiya, Manoj Lakhotia, Sukhdev Choudhary, Gopal Raj Prajapati, Sangeeta Pradhan
A 40-year-old male presented because of generalized weakness, fatigability, and hyperpigmentation with ecchymosis, he was diagnosed to have dietary Vitamin B12 deficiency anemia. The hyperpigmentation and ecchymosis lesions resolved after Vitamin B12 supplementation. Beside hyperpigmented lesion on the skin, the presence of ecchymosis is a very rare manifestation of the disease. Thrombocytopenia in Vitamin B12 deficiency anemia rarely leads to ecchymosis.
April 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/27822947/acquired-bilateral-dyspigmentation-on-face-and-neck-clinically-appropriate-approaches
#13
You Jin Lee, Ji Hye Park, Dong Youn Lee, Jong Hee Lee
Facial dyspigmentation in Asian women often poses diagnostic and therapeutic challenges. Recently, a distinctive bilateral hyperpigmentation of face and neck has occasionally been observed. This study was performed to investigate the clinico-pathological features of this dyspigmentation as well as proper treatment approaches. We retrospectively investigated the medical records including photographs, routine laboratory tests, histopathologic studies of both lesional and peri-lesional normal skin and patch test of thirty-one patients presented acquired bizarre hyperpigmentation on face and neck...
December 2016: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27790622/an-occult-malignancy-behind-a-demyelinating-disease-poems-syndrome
#14
Saberio Lo Presti, Prashanth Kanagarajah, Daniela Pirela, Diana Morlote, Mike Cusnir
We report a case of a 38-year-old man presenting with bilateral lower extremity weakness and paresthesias that progressed during a 4-month period to severe polyneuropathy forcing the patient to be bed bound. Throughout his multiple hospitalizations, he was treated erroneously for chronic inflammatory demyelinating polyneuropathy, without significant improvement in his symptoms. In addition, he developed hepatosplenomegaly (organomegaly); endocrinopathies such as diabetes mellitus, central hypogonadism, and hypothyroidism; monoclonal spike evidenced in the serum electrophoresis; and hyperpigmentation of skin, altogether consistent with POEMS syndrome...
October 2016: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/27786580/postinflammatory-hyperpigmentation-associated-with-treatment-of-solar-lentigines-using-a-q-switched-532-nm-nd-yag-laser-a-multicenter-survey
#15
Hyun Ji Kang, Jung Im Na, Jong Hee Lee, Mi Ryung Roh, Joo Yeon Ko, Sung Eun Chang
PURPOSE: To characterize the risk factors of Korean patients for postinflammatory hyperpigmentation (PIH) during treatment of solar lentigines using a Q-switched 532-nm Nd: YAG (QS 532 NY) laser. MATERIALS AND METHODS: The present retrospective multicenter study was conducted at the dermatology clinics of five tertiary hospitals in Korea. Between October 2007 and January 2013, 516 patients were enrolled and reviewed for clinical features and factors associated with PIH...
November 15, 2016: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/27784526/abdominal-elephantiasis-nostras-verrucosa-an-underrecognized-disorder
#16
Derek Ho, Eve J Lowenstein
Case 1 A 60-year-old African American man presented with a medical history of morbid obesity (weighing more than 550 lb), benign prostatic hyperplasia, hyperlipidemia, gynecomastia, atrial fibrillation, hypertension, chronic obstructive pulmonary disease, psoriasis, sleep apnea, and cardiomegaly. His size has limited his ability to clean himself properly. He experiences chronic and recurrent skin irritation and cellulitis possibly secondary to intertriginous superinfection, lymphedema, and venous stasis. On examination, his abdomen showed heavy skinfolding with hyperpigmentation, cobblestone and velvety changes, thickening and fibrotic induration of the skin, focal areas of redness, and tenderness on palpation (Figure 1A and 1B)...
2016: Skinmed
https://www.readbyqxmd.com/read/27776184/deoxyarbutin-possesses-a-potent-skin-lightening-capacity-with-no-discernible-cytotoxicity-against-melanosomes
#17
Fang Miao, Ying Shi, Zhi-Feng Fan, Shan Jiang, Shi-Zheng Xu, Tie-Chi Lei
Safe and effective ingredients capable of removing undesired hyperpigmentation from facial skin are urgently needed for both pharmaceutical and cosmetic purposes. Deoxyarbutin (4-[(tetrahydro-2H-pyran-2-yl) oxy] phenol, D-Arb) is a glucoside derivative of hydroquinone. Here, we investigated the toxicity and efficacy of D-Arb at the sub-cellular level (directly on melanosomes) and skin pigmentation using in vivo and in vitro models to compare with its parent compound hydroquinone (1,4-benzenediol, HQ). At first, we examined the ultrastructural changes of melanosomes in hyperpigmented guinea pig skin induced by 308-nm monochromatic excimer lightand/or treated with HQ and D-Arb using transmission electron microscopy...
2016: PloS One
https://www.readbyqxmd.com/read/27766668/two-histopathological-patterns-of-postinflammatory-hyperpigmentation-epidermal-and-dermal
#18
Ji-Youn Park, Ji-Hye Park, Sang Jin Kim, Ji Eun Kwon, Hee Young Kang, Eun-So Lee, You Chan Kim
BACKGROUND: Postinflammatory hyperpigmentation (PIH) commonly occurs, but the histopathological features are not well characterized. METHODS: A total of 21 PIH patients' medical charts were reviewed. Punch biopsies from lesional and perilesional normal skin were performed. Sections were stained with hematoxylin-eosin, Fontana-Masson, NKI/beteb, microphthalmia-associated transcription factor (MITF), CD68, c-kit, factor XIIIa, MMP-2 and MMP-9. RESULTS: Fontana-Masson-stained sections suggested two obvious PIH groups: epidermal (13 cases) and dermal (8 cases) pigmentation...
October 21, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27761089/evaluation-of-carbon-dioxide-laser-in-the-treatment-of-epidermal-nevi
#19
Yasmeen Jabeen Bhat, Iffat Hassan, Peerzada Sajad, Atiya Yaseen, Syed Mubashir, Saniya Akhter, Roohi Wani
BACKGROUND: Epidermal naevi are benign hamartomatous growths of the skin which are generally asymptomatic with a benign course but are cosmetically disagreeable. Topical treatments such as steroids, calcipotriol, 5 fluorouracil, podophyllin, retinoids and cryotherapy are ineffective and surgical excision results in scar formation. Therapy is often challenging. AIM OF THE STUDY: To study the response of carbon dioxide (CO2) laser in the management of epidermal naevi...
July 2016: Journal of Cutaneous and Aesthetic Surgery
https://www.readbyqxmd.com/read/27759634/delayed-diagnosis-with-autoimmune-polyglandular-syndrome-type-2-causing-acute-adrenal-crisis-a-case-report
#20
Xiaojing Wang, Fan Ping, Cuijuan Qi, Xinhua Xiao
BACKGROUND: Autoimmune polyglandular syndrome type 2 (APS-2), also known as Schmidt's syndrome, is an uncommon disorder characterized by the coexistence of Addison's disease with thyroid autoimmune disease and/or type 1 diabetes mellitus. Addison's disease as the obligatory component is potentially life-threatening. Unfortunately, the delayed diagnosis of Addison's disease is common owing to its rarity and the nonspecific clinical manifestation. METHODS: Here we reported a case of 38-year-old female patient who presented with 2 years' history of Hashimoto's thyroiditis and received levothyroxine replacement...
October 2016: Medicine (Baltimore)
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