Postinflammatory hypopigmentation and hyperpigmentation

Ruíz-Maldonado, Ramón; Orozco-Covarrubias, María de la Luz

doi:10.1016/s1085-5629(97)80034-x

Cited by 152 publications

(118 citation statements)

References 11 publications

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“…25,[27][28][29] Alternatively, extreme inflammation may eventually destroy melanocytes in the epidermis resulting in hypopigmentation in and around the ulcer site after ulcer healing. 26 Hyperspectral imaging in the visible and near-infrared (NIR) parts of the spectrum has been used to determine the spatial distribution of oxygen saturation in the human skin. 15 This technique has also been applied clinically to study diabetic neuropathy 30 and predict the healing potential of diabetic foot ulcers.…”

Section: Principlementioning

confidence: 99%

Hyperspectral Imaging in Diabetic Foot Wound Care

Yudovsky

Nouvong

Pilon

2010

J Diabetes Sci Technol

140

109

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Diabetic foot ulceration is a major complication of diabetes and afflicts as many as 15 to 25% of type 1 and 2 diabetes patients during their lifetime. If untreated, diabetic foot ulcers may become infected and require total or partial amputation of the affected limb. Early identification of tissue at risk of ulcerating could enable proper preventive care, thereby reducing the incidence of foot ulceration. Furthermore, noninvasive assessment of tissue viability around already formed ulcers could inform the diabetes caregiver about the severity of the wound and help assess the need for amputation. This article reviews how hyperspectral imaging between 450 and 700 nm can be used to assess the risk of diabetic foot ulcer development and to predict the likelihood of healing noninvasively. Two methods are described to analyze the in vivo hyperspectral measurements. The first method is based on the modified Beer-Lambert law and produces a map of oxyhemoglobin and deoxyhemoglobin concentrations in the dermis of the foot. The second is based on a two-layer optical model of skin and can retrieve not only oxyhemoglobin and deoxyhemoglobin concentrations but also epidermal thickness and melanin concentration along with skin scattering properties. It can detect changes in the diabetic foot and help predict and understand ulceration mechanisms

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Section: Principlementioning

confidence: 99%

Hyperspectral Imaging in Diabetic Foot Wound Care

Yudovsky

Nouvong

Pilon

2010

J Diabetes Sci Technol

140

109

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“…9,10 It may last for months and tends to be more severe in diseases with chronic, recurrent inflammations. 11 Other studies also mention post inflammatory hyperpigmentation to be the second most common cause of dark skin lesions after melasma. 12 Acquired melanocytic nevi (AMN) were seen in 7.48% patients in our study.…”

Section: Discussionmentioning

confidence: 99%

Hyperpigmented skin conditions: a study of pattern and prevalence from a tertiary care hospital of north india

Adil¹,

Amin²,

Arif³

et al. 2017

Int j curr adv res

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“…Esto está genéticamente determinado y se hereda en forma de un patrón autosómico dominante. En general las personas con mayor susceptibilidad a daño cutáneo tienden a desarrollar hipomelanosis 14 .…”

Section: Discussionunclassified

Dermatosis por Neblina Ácida. A propósito de un caso

Amaro

Alberdi

Amaro

et al. 2015

Rev. chil. dermatol

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IntroducciónLas dermatosis laborales representan una importante causa de discapacidad en el trabajo, con un considerable impacto en el trabajador, que puede conducir a un cambio de actividad laboral, interferencia en sus actividades sociales e incluso discapacidad permanente 1-3 . Dentro de las dermatosis laborales, la dermatitis de contacto (DC) son el tipo más frecuente, siendo la dermatitis de contacto irritativa (DCI) y la dermatitis de contacto alérgica (DCA) aproximadamente un 80% y 20% de las dermatitis de contacto ocupacional (DCO) respectivamente 4 .Las DCO, tanto alérgica como irritativa, pueden desarrollarse en cualquier etapa de la carrera profesional y son clíni-camente indistinguibles de aquellas producidas por factores no ocupacionales. La única diferencia se basa en su causa. Es por ello que el proceso de evaluación de un paciente con DCO debe ser muy riguroso, precisando detalladamente en la historia clínica los síntomas, las sustancias que están en contacto con la piel durante la actividad laboral, tiempo de exposición, así como la mejoría de los síntomas al suspender la actividad y el empeoramiento al retomarla 5 .La DCI ocupacional es una dermatitis iniciada y mantenida por la exposición temporal a agentes físicos o químicos 6 .Dentro de los agentes químicos conocidos, los metales tienen el potencial de causar DC irritativa y/o alérgica 7 . Los reportes de contactantes volátiles capaces de producir DC son relacionados, en la mayoría de los casos, a lugares de trabajo y, por lo general, los reportes son subestimados debido a la omisión de datos de contacto con polvos o agentes volátiles 8 . Caso ClínicoPaciente de sexo masculino, 47 años de edad, con antecedentes de trombosis venosa profunda de pierna y trombo-

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Postinflammatory hypopigmentation and hyperpigmentation

Cited by 152 publications

References 11 publications

Hyperspectral Imaging in Diabetic Foot Wound Care

Hyperspectral Imaging in Diabetic Foot Wound Care

Hyperpigmented skin conditions: a study of pattern and prevalence from a tertiary care hospital of north india

Dermatosis por Neblina Ácida. A propósito de un caso

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