Hyperpigmentation
Mostrando 13-24 de 63 artigos, teses e dissertações.
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13. Association of amyloidosis cutis dyschromica and familial Mediterranean fever
Abstract: Amyloidosis cutis dyschromica is a rare type of primary cutaneous amyloidosis characterized by reticulate hyper-pigmentation with discrete hypopigmented macules. Up to date, about 50 cases of amyloidosis cutis dyschromica have been reported and the majority are familial cases of Asian ethnicity. Various diseases, particularly autoimmune diseases su
An. Bras. Dermatol.. Publicado em: 2017
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14. Diffuse cutaneous melanosis: rare complication of metastatic melanoma
Abstract Diffuse cutaneous melanosis is a rare complication of metastatic melanoma related to a worse prognosis. There are few cases reported in the literature. Its pathogenesis has not been completely elucidated, although studies have suggested certain mechanisms for its occurrence. It is clinically manifested as a blue-gray discoloration of the skin and mu
An. Bras. Dermatol.. Publicado em: 2017
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15. Hyperpigmentation as a peculiar presentation of mycosis fungoides
Abstract Hyperpigmented mycosis fungoides is an extremely rare subtype of mycosis fungoides. It presents as multiple pigmented macules and patches without poikilodermatous changes and characterized by a CD8+ phenotype on immunohistochemistry. This report describes a typical case of hyperpigmented mycosis fungoides in a 62-year-old woman, who presented with a
An. Bras. Dermatol.. Publicado em: 2017
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16. Hyperpigmentation and chikungunya fever
An. Bras. Dermatol.. Publicado em: 2016-12
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17. Do you know this syndrome? Dyspigmentation along the Blaschko lines caused by trisomy 7 mosaicism
Abstract Dyspigmentation along the Blaschko lines is strongly suggestive of a mosaic skin disorder. We report a 9-year-old male patient who presented with swirls and streaks of both hypo and hyperpigmentation involving the entire body. Additionally, he had hypertrichosis, musculoskeletal and minor neurodevelopment abnormalities but no intellectual disability
An. Bras. Dermatol.. Publicado em: 2016-12
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18. Randomized trial of radiofrequency ablation versus conventional surgery for superficial venous insufficiency: if you don’t tell, they won’t know
OBJECTIVES: This study compared radiofrequency ablation versus conventional surgery in patients who had not undergone previous treatment for bilateral great saphenous vein insufficiency, with each patient serving as his own control. METHOD: This was a randomized controlled trial that included 18 patients and was carried out between November 2013 and May 20
Clinics. Publicado em: 2016-11
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19. Laptop computer induced erythema ab igne: a new presentation of an old disease
Abstract Erythema ab igne is a condition characterized by skin changes due to chronic exposure to moderate temperature. We describe a female patient with continuous use of a laptop computer on exposed legs for 6 months and consequent development of reticulated hyperpigmentation at the area. Histopathological examination revealed epidermal atrophy, collagen f
An. Bras. Dermatol.. Publicado em: 2016-10
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20. Chemical leukoderma induced by dimethyl sulfate
Abstract Chemical leukoderma occurs due to the toxic effect of a variety of chemical agents. Mechanisms include either destruction or inhibition of melanocytes. We report two male patients (36 and 51 years old) who presented with multiple hypopigmented macules and patches on the neck, wrist, and legs after exposure to dimethyl sulfate in a chemical industry.
An. Bras. Dermatol.. Publicado em: 2016-10
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21. Oculoectodermal syndrome: twentieth described case with new manifestations
Abstract Oculoectodermal syndrome is a rare disease characterized by the association of aplasia cutis congenita, epibulbar dermoids, and other abnormalities. This report describes the twentieth case of the disease. We report a 4-year-old female child who presented with the classical features of the syndrome: aplasia cutis congenita and epibulbar dermoids. Ou
An. Bras. Dermatol.. Publicado em: 2016-10
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22. Effects of Acmella oleracea methanolic extract and fractions on the tyrosinase enzyme
Abstract The aim of the current study is to evaluate the effect of Acmella oleracea (L.) R.K. Jansen, Asteraceae, methanolic extract, hexane (84.28% spilanthol) and dichloromethane (approximately 100% spilanthol) fractions on the tyrosinase enzyme. The dehydrated jambu extract was obtained through maceration using methanol. The extract residue was solubilize
Rev. bras. farmacogn.. Publicado em: 2016-06
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23. Physiological and lifestyle factors contributing to risk and severity of peri-orbital dark circles in the Brazilian population
AbstractBACKGROUND:Peri-orbital dark circles are a cosmetic concern worldwide, and have been attributed to hyperpigmentation from allergy or atopic dermatitis, blood stasis, structural shadowing effects, and a thin epidermis/dermis under the eye. It is of interest to better understand lifestyle and demographic risk factors and the relative impact of melanin,
An. Bras. Dermatol.. Publicado em: 2015-08
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24. Laugier-Hunziker syndrome - Case report
AbstractLaugier-Hunziker syndrome is a rare, acquired disorder characterized by lenticular hyperpigmentation of the oral mucosa and longitudinal melanonychia. We present the case of a 63-year-old female with progressive, asymptomatic hyperpigmentation of buccal mucosa and a 7-year history of hyperpigmentation in several fingernails. Laugier-Hunziker syndrome
An. Bras. Dermatol.. Publicado em: 2015-06